Project Gutenberg 2016-12-20 Public domain in the USA. 53 Martindale, Joseph C. (Joseph Comly) 1833 1872 Martindale, Joseph Comly First Lessons in Natural Philosophy for Beginners Produced by Stephen Hutcheson, Kate Rooney & Ian Smith, MFR and the Online Distributed Proofreading Team at http://www.pgdp.net en Physics QC Text Browsing: Science - Physics Browsing: Science - General 333553 333568 2024-08-22T09:57:58.801204 2023-09-23T08:32:42.560379 text/html text/html 323152 2016-12-20T15:29:04 text/html 2670861 2024-08-22T09:58:09.276141 application/epub+zip 2680746 2024-08-22T09:58:02.167192 application/epub+zip 151790 2024-08-22T09:58:00.352169 application/epub+zip 2767610 2024-08-22T09:58:13.670088 application/x-mobipocket-ebook 2754497 2024-08-22T09:58:07.843138 application/x-mobipocket-ebook 240144 2022-09-24T13:06:01.335188 application/x-mobipocket-ebook 244724 244596 2024-08-22T09:57:55.953206 2023-09-23T08:32:39.797334 text/plain; charset=us-ascii text/plain 244950 2016-12-20T15:29:02 text/plain; charset=utf-8 69046 2016-12-20T15:29:08 text/plain; charset=utf-8 application/zip 17775 2024-08-22T09:58:13.815087 application/rdf+xml 21868 2024-08-22T09:58:00.496174 image/jpeg 3039 2024-08-22T09:58:00.424163 image/jpeg 2329465 2016-12-20T15:29:08 application/octet-stream application/zip 2375169 2024-08-22T09:57:59.038171 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://www.gutenberg.org/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog