Project Gutenberg 2016-12-06 Public domain in the USA. 155 Newcastle, Margaret Cavendish, Duchess of 1674 Cavendish, Margaret, Duchess of Newcastle Lucas, Margaret Philosophical Letters: or, modest Reflections upon some Opinions in Natural Philosophy Produced by Clare Graham and Marc D'Hooghe at Free Literature (online soon in an extended version, also linking to free sources for education worldwide ... MOOC's, educational materials,...) Images generously made available by the Internet Archive. en Philosophy Newcastle, William Cavendish, Duke of, 1592-1676 PR Text Browsing: Philosophy & Ethics 979526 979535 2024-07-22T09:26:14.851627 2023-09-23T08:00:15.625330 text/html text/html 982641 2016-12-07T10:41:06 text/html; charset=iso-8859-1 544446 2016-12-07T10:41:32 text/html; charset=iso-8859-1 application/zip 558291 2024-07-22T09:26:24.985547 application/epub+zip 577331 2024-07-22T09:26:16.046583 application/epub+zip 404115 2024-07-22T09:26:15.437586 application/epub+zip 848986 2024-07-22T09:26:31.892043 application/x-mobipocket-ebook 782734 2024-07-22T09:26:24.323549 application/x-mobipocket-ebook 609607 2022-09-24T11:53:08.631456 application/x-mobipocket-ebook 890408 890141 2024-07-22T09:26:13.314588 2023-09-23T08:00:13.883362 text/plain; charset=us-ascii text/plain 890573 2016-12-07T10:40:34 text/plain; charset=iso-8859-1 294424 2016-12-07T10:41:30 text/plain; charset=iso-8859-1 application/zip 17732 2024-07-22T09:26:32.032014 application/rdf+xml 19315 2024-07-22T09:26:15.573587 image/jpeg 3161 2024-07-22T09:26:15.505584 image/jpeg 553838 2024-07-22T09:26:14.932613 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