Project Gutenberg 2008-10-08 Public domain in the USA. 1404 Ball, W. W. Rouse (Walter William Rouse) 1850 1925 Ball, Walter William Rouse Mathematical Recreations and Essays en Numbers, Prime Astrology Matter Mathematical recreations Geometry -- Famous problems Cryptography Ciphers Space and time Magic squares University of Cambridge -- History Mathematics -- Study and teaching -- England -- Cambridge QA Text Mathematics 3086814 2021-10-18T21:40:00 application/pdf 11771 2025-08-11T06:45:51.739318 application/rdf+xml 1041801 2021-10-23T14:43:02 application/prs.tex 17878 2025-08-11T06:45:51.656360 image/jpeg 4106 2025-08-11T06:45:51.416320 image/jpeg 2245083 2021-10-18T12:47:00 application/octet-stream application/zip 1064670 2021-10-24T07:11:02 application/octet-stream application/zip 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 en.wikipedia