Project Gutenberg 2023-07-28 Public domain in the USA. 109 Babbage, Charles 1791 1871 The calculating engine $aUnited Kingdom :$bAdam and Charles Black, $c1834. Laura Natal Rodrigues (Images generously made available by Hathi Trust Digital Library) https://catalog.hathitrust.org/Record/000530182 20230702035807babbage 1834 gb en Calculators QA Text Browsing: Computers & Technology Browsing: Science - General 213768 213750 2024-07-29T10:04:09.907901 2023-09-30T10:57:44.854997 text/html text/html 190057 2023-12-10T07:33:19 text/html 1358747 2024-07-29T10:04:15.154904 application/epub+zip 1361913 2024-07-29T10:04:11.586921 application/epub+zip 116971 2024-07-29T10:04:10.559907 application/epub+zip 1480181 2024-07-29T10:04:17.728862 application/x-mobipocket-ebook 1469332 2024-07-29T10:04:14.441884 application/x-mobipocket-ebook 188641 188609 2024-07-29T10:04:09.398928 2023-09-30T10:57:44.152998 text/plain; charset=us-ascii text/plain 168808 2023-12-10T08:20:02 text/plain; charset=us-ascii 14735 2024-07-29T10:04:17.863866 application/rdf+xml 13697 2024-07-29T10:04:10.922917 image/jpeg 3814 2024-07-29T10:04:10.739897 image/jpeg 1332813 2024-07-29T10:04:09.943942 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 en.wikipedia