You like Set Theory? You want: Dewey Decimal (ddc) 512.817 Here’s a bunch of books. http://librarything.com/mds/512.817 Posted on April 14, 2020 by Kenneth Udut Leave a comment You like Set Theory? You want: Dewey Decimal (ddc) 512.817 Here’s a bunch of books. http://librarything.com/mds/512.817 🔊 Listen to this Leave a comment Cancel reply Your email address will not be published. Required fields are marked * Name * Email * Website × nine = 63 Comment Leave a Reply