Project Gutenberg 2017-03-04 Public domain in the USA. 23 Ferri, Enrico 1856 1929 Ferri, Enrique Payró, Roberto Jorge 1867 1928 Payro, Roberto Jorge Payró, R. J. (Roberto Jorge) Payró, Roberto J. (Roberto Jorge) Socialismo y ciencia positiva (Darwin-Spencer-Marx) Produced by Pedro Silvio Vivono es Socialism Evolution Spencer, Herbert, 1820-1903 HX Text Browsing: Politics Browsing: Science - Genetics/Biology/Evolution Browsing: Sociology 280916 280859 2024-08-22T12:27:36.100607 2023-09-23T10:49:05.608889 text/html text/html 280909 280852 2024-08-22T12:27:36.294576 2023-09-23T10:49:05.782901 text/html text/html 163227 2024-08-22T12:27:41.430559 application/epub+zip 166311 2024-08-22T12:27:37.819589 application/epub+zip 166311 2024-08-22T12:27:36.908596 application/epub+zip 358507 2024-08-22T12:27:44.087588 application/x-mobipocket-ebook 340896 2024-08-22T12:27:40.787553 application/x-mobipocket-ebook 340868 2022-09-24T18:06:16.091991 application/x-mobipocket-ebook 255777 255763 2024-08-22T12:27:35.692588 2023-09-23T10:49:05.358885 text/plain; charset=us-ascii text/plain 255898 2017-03-04T13:14:00 text/plain; charset=utf-8 90648 2017-03-04T13:14:04 text/plain; charset=utf-8 application/zip 19326 2024-08-22T12:27:44.224530 application/rdf+xml 17975 2024-08-22T12:27:37.251570 image/jpeg 3751 2024-08-22T12:27:37.078581 image/jpeg 165395 2024-08-22T12:27:36.318570 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 en.wikipedia es.wikipedia