general to specific xref popularity 2 for me ddc

50X Natural sciences and mathematics > General Science Count
00X Information > Computing And Information Count
5 Information > Computing And Information > Computer Software Count
5.1 Information > Computing And Information > Computer Software > Programming Count
519 Natural sciences and mathematics > Mathematics > Applied Mathematics, Probabilities Count
0XX Information Count
51X Natural sciences and mathematics > Mathematics Count
519.5 Natural sciences and mathematics > Mathematics > Applied Mathematics, Probabilities > Statistical Mathematics Count
5.13 Information > Computing And Information > Computer Software > Programming > Languages Count
1XX Philosophy and Psychology Count
5XX Natural sciences and mathematics Count
4 Information > Computing And Information > Data processing, computer science Count
53X Natural sciences and mathematics > Physics Count
19X Philosophy and Psychology > Modern western philosophy Count
153 Philosophy and Psychology > Psychology > Cognition And Memory Count
150 Philosophy and Psychology > Psychology > Psychology Count
1 Information > Computing And Information > Knowledge Count
90X History & Geography > History Count
300 Social Sciences > Social Sciences, Sociology, Anthropology > Social Sciences Count
17X Philosophy and Psychology > Ethics Count
12X Philosophy and Psychology > Philosophy Of Humanity Count
1.42 Information > Computing And Information > Knowledge > Research And Data Display Count
1.4 Information > Computing And Information > Knowledge > Research And Data Display Count
530 Natural sciences and mathematics > Physics > Physics Count
515 Natural sciences and mathematics > Mathematics > Analysis Count
300.72 Social Sciences > Social Sciences, Sociology, Anthropology > Social Sciences > Education And Research > Social sciences–research Count
300.7 Social Sciences > Social Sciences, Sociology, Anthropology > Social Sciences > Education And Research Count
15X Philosophy and Psychology > Psychology Count
658.4 Technology > Management and auxiliary services > Management > Executive Count
52X Natural sciences and mathematics > Astronomy Count
57X Natural sciences and mathematics > Life Sciences, Biology Count
301 Social Sciences > Social Sciences, Sociology, Anthropology > Sociology, Anthropology Count
10X Philosophy and Psychology > Philosophy Count
6.3 Information > Computing And Information > Special Topics > Artificial Intelligence Count
6 Information > Computing And Information > Special Topics Count
519: Probabilities & applied mathematics Count
511 Natural sciences and mathematics > Mathematics > General Principles Count
501 Natural sciences and mathematics > General Science > Philosophy and theory Count
332.6 Social Sciences > Economics > Finance > Investing Count
330.01 Social Sciences > Economics > Economics > > > Philosophy And Psychology Count
330 Social Sciences > Economics > Economics Count
330 Social Sciences > Economics > Economics > > Count
300.1 Social Sciences > Social Sciences, Sociology, Anthropology > Social Sciences > Philosophy and Theory Count
3 Information > Computing And Information > Systems Theory Count
294 Religion > Other Religions > Religions of Indic origin Count
16X Philosophy and Psychology > Logic Count
320 Social Sciences > Political Science > Political Science Count
23X Religion > Christianity Count
230 Religion > Christianity > Christianity, Christian theology Count
21X Religion > Theory Count
20X Religion > Religion Count
160 Philosophy and Psychology > Logic > Logic Count
13X Philosophy and Psychology > Parapsychology And Occultism Count
133 Philosophy and Psychology > Parapsychology And Occultism > Specific Topics Count
745 Arts and Recreation > Drawing and decorative arts > Decorative Art And Design Count
72X Arts and Recreation > Architecture Count
620: Engineering & allied operations Count
511.3 Natural sciences and mathematics > Mathematics > General Principles > Mathematical (Symbolic) logic Count
428 Language > English > Standard English usage (Prescriptive linguistics) Count
93X History & Geography > Ancient World Count
794.8 Arts and Recreation > Amusements and Recreation > Games Of Skill > Video Games Count
794 Arts and Recreation > Amusements and Recreation > Games Of Skill Count
65X Technology > Management and auxiliary services Count
658 Technology > Management and auxiliary services > Management Count
621: Applied physics Count
537 Natural sciences and mathematics > Physics > Electricity Count
531 Natural sciences and mathematics > Physics > Mechanics Count
530.1 Natural sciences and mathematics > Physics > Physics > Theoretical Physics Count
523 Natural sciences and mathematics > Astronomy > Astronomical objects and astrophysics Count
508 Natural sciences and mathematics > General Science > Natural history Count
500 Natural sciences and mathematics > General Science > General Science Count
5.8 Information > Computing And Information > Computer Software > Computer Security Count
5.44 Information > Computing And Information > Computer Software > Compilers And Operating Systems Count
5.43 Information > Computing And Information > Computer Software > Compilers And Operating Systems > Unix-Like Count
5.4 Information > Computing And Information > Computer Software > Compilers And Operating Systems Count
4.6 Information > Computing And Information > Data processing, computer science > Networking Count
4.16 Information > Computing And Information > Data processing, computer science > By Computer Type > Personal Computers Count
4.1 Information > Computing And Information > Data processing, computer science > By Computer Type Count
303 Social Sciences > Social Sciences, Sociology, Anthropology > Social Processes Count
299 Religion > Other Religions > By Region/Civilization Count
128 Philosophy and Psychology > Philosophy Of Humanity > The Human Condition Count
100 Philosophy and Psychology > Philosophy > General Philosophy Count
1.64 Information > Computing And Information > Knowledge > Computer Science Count
1.6 Information > Computing And Information > Knowledge > Computer Science Count
930 History & Geography > Ancient World > Ancient History Count
83X Literature > German & Germanic Count
833.9 Literature > German & Germanic > Fiction > Modern period (1900-) Count
833 Literature > German & Germanic > Fiction Count
830 Literature > German & Germanic > German Literature Count
809 Literature > By Topic > History and criticism of three or more literatures Count
793.74 Arts and Recreation > Amusements and Recreation > Indoor Amusements > Board games, mental puzzles > Mathematical Games And Puzzles Count
793.7 Arts and Recreation > Amusements and Recreation > Indoor Amusements > Board games, mental puzzles Count
793 Arts and Recreation > Amusements and Recreation > Indoor Amusements Count
629.8 Technology > Engineering and allied operations > Other Branches > Automata Count
621.39 Technology > Engineering and allied operations > Applied physics > Electrical, magnetic, optical, communications, computer engineering; electronics, lighting > Computer engineering Count
612 Technology > Medicine > Physiology Count
60X Technology > General Technology Count
59X Natural sciences and mathematics > Zoology Count
551 Natural sciences and mathematics > Earth sciences & geology > Geology, Hydrology Meteorology Count
519.53 Natural sciences and mathematics > Mathematics > Applied Mathematics, Probabilities > Statistical Mathematics Count
511: General principles of mathematics Count
362.1 Social Sciences > Social problems and services; associations > Social problems of & services to groups of people > People with physical ailments Count
303.4 Social Sciences > Social Sciences, Sociology, Anthropology > Social Processes > Social change Count
300: Social sciences Count
29X Religion > Other Religions Count
294.3 Religion > Other Religions > Religions of Indic origin > Buddhism Count
190 Philosophy and Psychology > Modern western philosophy > Modern Philosophers Count
170 Philosophy and Psychology > Ethics > Ethics — Subdivisions Count
160: Logic Count
121 Philosophy and Psychology > Philosophy Of Humanity > Epistemology Count
11X Philosophy and Psychology > Metaphysics Count
100: Philosophy & psychology Count
973.93 History & Geography > North America > United States > 1901- > Bush Administration And Beyond Count
973.92 History & Geography > North America > United States > 1901- > Eisenhower Through Clinton Administrations Count
973.91 History & Geography > North America > United States > 1901- > Roosevelt Through Truman Administrations Count
973.9 History & Geography > North America > United States > 1901- Count
932 History & Geography > Ancient World > Ancient Egypt to 640 Count
909 History & Geography > History > World history Count
794.81 Arts and Recreation > Amusements and Recreation > Games Of Skill > Video Games Count
775 Arts and Recreation > Photography > Photography: Digital techniques Count
686.22 Technology > Manufacture of products for specific uses, handicrafts > Books: Binding, Design, Printing > Printing > Typography Count
686.2 Technology > Manufacture of products for specific uses, handicrafts > Books: Binding, Design, Printing > Printing Count
686 Technology > Manufacture of products for specific uses, handicrafts > Books: Binding, Design, Printing Count
658.87 Technology > Management and auxiliary services > Management > Of Marketing Count
658.8 Technology > Management and auxiliary services > Management > Of Marketing Count
62X Technology > Engineering and allied operations Count
621.38 Technology > Engineering and allied operations > Applied physics > Electrical, magnetic, optical, communications, computer engineering; electronics, lighting > Electronics, communications engineering Count
621.3 Technology > Engineering and allied operations > Applied physics > Electrical, magnetic, optical, communications, computer engineering; electronics, lighting Count
621 Technology > Engineering and allied operations > Applied physics Count
599 Natural sciences and mathematics > Zoology > Mammals Count
501: Philosophy & theory Count
398.4 Social Sciences > Customs, Etiquette, Folklore > Folklore > Paranatural and legendary phenomena as subjects of folklore Count
32X Social Sciences > Political Science Count
303.48 Social Sciences > Social Sciences, Sociology, Anthropology > Social Processes > Social change > Causes of change Count
302.2 Social Sciences > Social Sciences, Sociology, Anthropology > Social Interaction > Communication Count
190: Modern western philosophy Count
14X Philosophy and Psychology > Philosophical Systems Count
133.9 Philosophy and Psychology > Parapsychology And Occultism > Specific Topics > Spiritism – Table-tipping, etc. Count
133.8 Philosophy and Psychology > Parapsychology And Occultism > Specific Topics > Psychic Phenomena Count
133.1 Philosophy and Psychology > Parapsychology And Occultism > Specific Topics > Apparition – Ghosts Count
110 Philosophy and Psychology > Metaphysics > Metaphysics Count
003: Systems Count
001: Knowledge Count
973 History & Geography > North America > United States Count
947 History & Geography > Europe > Russia and Eastern Europe [also, more Finland] Count
941 History & Geography > Europe > British Isles > Historical periods of British Isles Count
808 Literature > By Topic > Anthologies and rhetoric > Rhetoric; Other Writing Instruction Count
80 Information > Quotations > Anthologies; Quotations Count
796.52 Arts and Recreation > Amusements and Recreation > Athletic and outdoor sports and games > Outdoor Leisure > Exploring geological features (mountains, caves …) Count
796.5 Arts and Recreation > Amusements and Recreation > Athletic and outdoor sports and games > Outdoor Leisure Count
658.1 Technology > Management and auxiliary services > Management > Of Corporate Finance Count
658.05 Technology > Management and auxiliary services > Management Count
652 Technology > Management and auxiliary services > Writing: Materials, Typewriters Count
651 Technology > Management and auxiliary services > Office Equipment and Methods Count
649.1 Technology > Home and family management > Parenting, Caregiving > Parenting Count
649 Technology > Home and family management > Parenting, Caregiving Count
61X Technology > Medicine Count
618.92 Technology > Medicine > Gynecology and Pediatrics > Pediatrics & Geriatrics > Pediatric Care Count
618.9 Technology > Medicine > Gynecology and Pediatrics > Pediatrics & Geriatrics Count
618 Technology > Medicine > Gynecology and Pediatrics Count
616.89 Technology > Medicine > Pathology; Diseases; Treatment > Diseases of nervous system Count
616.85 Technology > Medicine > Pathology; Diseases; Treatment > Diseases of nervous system > Neuroses Count
616.8 Technology > Medicine > Pathology; Diseases; Treatment > Diseases of nervous system Count
616 Technology > Medicine > Pathology; Diseases; Treatment Count
612: Human physiology Count
612.8 Technology > Medicine > Physiology > Nervous system Count
610: Medicine & health Count
600: Technology Count
599.7 Natural sciences and mathematics > Zoology > Mammals > Ungulata, Carnivora, Domestic mammals Count
598.2 Natural sciences and mathematics > Zoology > Birds > Birds: Aves Count
598 Natural sciences and mathematics > Zoology > Birds Count
595.7 Natural sciences and mathematics > Zoology > Arthropoda > Insects: Insecta, Hexapoda Count
595 Natural sciences and mathematics > Zoology > Arthropoda Count
591 Natural sciences and mathematics > Zoology > Specific topics in natural history of animals Count
58X Natural sciences and mathematics > Botany Count
582.1 Natural sciences and mathematics > Botany > Phanerogamia Count
582 Natural sciences and mathematics > Botany > Phanerogamia Count
581 Natural sciences and mathematics > Botany > Physiologic and Structural Count
577 Natural sciences and mathematics > Life Sciences, Biology > Nature of Life Count
576 Natural sciences and mathematics > Life Sciences, Biology > Microbiology Count
574.5 Natural sciences and mathematics > Life Sciences, Biology > Biology > Ecology Count
574 Natural sciences and mathematics > Life Sciences, Biology > Biology Count
573 Natural sciences and mathematics > Life Sciences, Biology > Physiological systems in animals Count
571 Natural sciences and mathematics > Life Sciences, Biology > Physiology and related subjects Count
570 Natural sciences and mathematics > Life Sciences, Biology > Life Sciences Count
55X Natural sciences and mathematics > Earth sciences & geology Count
551.5 Natural sciences and mathematics > Earth sciences & geology > Geology, Hydrology Meteorology > Meteorology; Climate Count
520 Natural sciences and mathematics > Astronomy > Astronomy Count
508.7 Natural sciences and mathematics > General Science > Natural history Count
40X Language > Language Count
370: Education Count
36X Social Sciences > Social problems and services; associations Count
363.25 Social Sciences > Social problems and services; associations > Other Problems And Services > Police Services > Criminal investigation Count
362.19 Social Sciences > Social problems and services; associations > Social problems of & services to groups of people > People with physical ailments > Services to people with specific conditions Count
362.17 Social Sciences > Social problems and services; associations > Social problems of & services to groups of people > People with physical ailments > Hospice Care Count
362 Social Sciences > Social problems and services; associations > Social problems of & services to groups of people Count
344 Social Sciences > Law > Labor, social service, education, cultural law [Option B: Law > Europe] Count
338.76 Social Sciences > Economics > Production > Business Enterprises > By Industry Count
338.7 Social Sciences > Economics > Production > Business Enterprises Count
333: Economics of land & energy Count
330: Economics Count
31 Information > Dictionaries And Encyclopedias > American Count
302 Social Sciences > Social Sciences, Sociology, Anthropology > Social Interaction Count
291 Religion > Other Religions > Comparative Religion; Mythology (No Longer Used) Count
179 Philosophy and Psychology > Ethics > Other Ethical Topics Count
174.2 Philosophy and Psychology > Ethics > Professional and Business Ethics > Physicians Count
174 Philosophy and Psychology > Ethics > Professional and Business Ethics Count
158 Philosophy and Psychology > Psychology > Applied Psychology Count
155.4 Philosophy and Psychology > Psychology > Developmental And Differential Psychology > Childhood Count
155 Philosophy and Psychology > Psychology > Developmental And Differential Psychology Count
152 Philosophy and Psychology > Psychology > Emotions And Senses Count
150: Psychology Count
08X Information > Quotations Count
005: Computer programming, programs & data Count
004: Data processing & computer science Count
979 History & Geography > North America > West Coast U.S. Count
973.4 History & Geography > North America > United States > Constitutional period (1789-1809) Count
973.31 History & Geography > North America > United States > Revolution and confederation (1775-89) > Political history; causes, results Count
971.06 History & Geography > North America > Canada > Canada > Canada 1911-1999 Count
956 History & Geography > Asia > Middle East > Middle East Count
947.08 History & Geography > Europe > Russia and Eastern Europe [also, more Finland] > Russian & Slavic History by Period > 1855- Count
944.04 History & Geography > Europe > France And Monaco > France > Revolution 1789-1804 Count
941.08 History & Geography > Europe > British Isles > Historical periods of British Isles > 1837- Period of Victoria and House of Windsor Count
930: History of ancient world to ca. 499 Count
917.9 History & Geography > Geography and Travel > North America > West Coast U.S. Count
912 History & Geography > Geography and Travel > Maps and Atlases Count
910: Geography & travel Count
910.9 History & Geography > Geography and Travel > Geography and Travel > Biography And History Count
910 History & Geography > Geography and Travel > Geography and Travel Count
901 History & Geography > History > Philosophy & theory Count
88X Literature > Greek and other Classical languages Count
818.54 Literature > American And Canadian > Authors, American and American Miscellany > 20th Century Count
818.5 Literature > American And Canadian > Authors, American and American Miscellany > 20th Century Count
814 Literature > American And Canadian > Essays Count
797.12 Arts and Recreation > Amusements and Recreation > Water & Aerial Sports > Boating Count
797.1 Arts and Recreation > Amusements and Recreation > Water & Aerial Sports > Boating Count
797 Arts and Recreation > Amusements and Recreation > Water & Aerial Sports Count
77X Arts and Recreation > Photography Count
778.5 Arts and Recreation > Photography > Special Applications > Film making Count
778 Arts and Recreation > Photography > Special Applications Count
771 Arts and Recreation > Photography > Techniques, equipment, materials Count
741.6 Arts and Recreation > Drawing and decorative arts > Drawing & drawings > Graphic design, illustration, commercil art Count
68X Technology > Manufacture of products for specific uses, handicrafts Count
629.4 Technology > Engineering and allied operations > Other Branches > Astronauts and Space Travel Count
623.82 Technology > Engineering and allied operations > Military Engineering and Marine Engineering > Naval architecture; Shipbilding > History of Naval Architecture Count
623.8 Technology > Engineering and allied operations > Military Engineering and Marine Engineering > Naval architecture; Shipbilding Count
623 Technology > Engineering and allied operations > Military Engineering and Marine Engineering Count
620 Technology > Engineering and allied operations > Engineering Count
56X Natural sciences and mathematics > Fossils & prehistoric life Count
551: Geology, hydrology & meteorology Count
530: Physics Count
526 Natural sciences and mathematics > Astronomy > Mathematical geography Count
512: Algebra Count
500: Natural sciences & mathematics Count
410: Linguistics Count
39X Social Sciences > Customs, Etiquette, Folklore Count
387.2 Social Sciences > Commerce, Communications, Transportation > Rivers, Oceans, and Flight > Ocean travel Count
387 Social Sciences > Commerce, Communications, Transportation > Rivers, Oceans, and Flight Count
366 Social Sciences > Social problems and services; associations > Secret Societies (Freemasons, Knights Templar) Count
363.73 Social Sciences > Social problems and services; associations > Other Problems And Services > Environment > Environmental problems Count
363.7 Social Sciences > Social problems and services; associations > Other Problems And Services > Environment Count
363.34 Social Sciences > Social problems and services; associations > Other Problems And Services > Other Public Safety Concerns > Disasters (natural and otherwise) Count
363.3 Social Sciences > Social problems and services; associations > Other Problems And Services > Other Public Safety Concerns Count
363.12 Social Sciences > Social problems and services; associations > Other Problems And Services > Health And Safety > Transportation Count
363.1 Social Sciences > Social problems and services; associations > Other Problems And Services > Health And Safety Count
363 Social Sciences > Social problems and services; associations > Other Problems And Services Count
35X Social Sciences > Public Administration, Military Science Count
359 Social Sciences > Public Administration, Military Science > Navy; Naval Science Count
355 Social Sciences > Public Administration, Military Science > Military Science Count
333.9 Social Sciences > Economics > Economics of land & energy > Hydrospheric, Atmospheric, and Biospheric Resources Count
333 Social Sciences > Economics > Economics of land & energy Count
320: Political science Count
296 Religion > Other Religions > Judaism Count
200: Religion Count
194 Philosophy and Psychology > Modern western philosophy > French Count
193 Philosophy and Psychology > Modern western philosophy > Germany and Austria Count
192 Philosophy and Psychology > Modern western philosophy > British Count
18X Philosophy and Psychology > Ancient, medieval and eastern philosophy Count
171 Philosophy and Psychology > Ethics > Theories of Ethics Count
133.4 Philosophy and Psychology > Parapsychology And Occultism > Specific Topics > Witchcraft – Sorcery Count
109 Philosophy and Psychology > Philosophy > Historical and collected persons treatment of philosophy Count
100 Philosophy and Psychology Count
1.9 Information > Computing And Information > Knowledge > Controversial knowledge Count
03X Information > Dictionaries And Encyclopedias Count
019 Philosophy and Psychology > Modern western philosophy Count
006: Special computer methods Count

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