Archives containing the RDF files for *all* our books can be downloaded at https://book.klll.cc/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog Project Gutenberg 2012-12-06 Public domain in the USA. 1343 Whitehead, Alfred North 1861 1947 Whitehead, A. N. (Alfred North) An Introduction to Mathematics en Mathematics QA Text Mathematics 1021150 2012-12-06T12:22:45 application/pdf 9127 2025-08-16T17:20:03.142095 application/rdf+xml 413786 2021-06-11T17:21:33 application/prs.tex 17002 2025-08-16T17:20:03.068070 image/jpeg 4012 2025-08-16T17:20:02.786056 image/jpeg 686603 2012-12-06T12:22:45 application/octet-stream application/zip 310433 2021-06-11T17:21:33 application/octet-stream application/zip en.wikipedia