Project Gutenberg 2023-09-15 Public domain in the USA. 40 Hubble, Edwin 1889 1953 Hubble, Edwin Powell 20002512 Photographic investigations of faint nebulae $aChicago :$bThe University of Chicago Press, $c1920. Publications of the Yerkes Observatory, volume IV part II Charlene Taylor, Bryan Ness and the Online Distributed Proofreading Team at https://www.pgdp.net (This file was produced from images generously made available by The Internet Archive/American Libraries.) 20080731103905hubble 1920 US en Nebulae QB Text Browsing: Science - Astronomy 217824 217836 2024-08-29T11:44:35.493157 2023-09-30T12:31:33.212450 text/html text/html 243096 2023-09-15T02:05:29 text/html 617277 2024-08-29T11:44:42.536141 application/epub+zip 617442 2024-08-29T11:44:37.115136 application/epub+zip 112277 2024-08-29T11:44:36.393182 application/epub+zip 675500 2024-08-29T11:44:45.590095 application/x-mobipocket-ebook 665356 2024-08-29T11:44:41.924132 application/x-mobipocket-ebook 99890 99920 2024-08-29T11:44:34.790172 2023-09-30T12:31:32.410413 text/plain; charset=us-ascii text/plain 99938 2023-09-15T02:05:29 text/plain; charset=us-ascii 16289 2024-08-29T11:44:45.750092 application/rdf+xml 6920 2024-08-29T11:44:36.600142 image/jpeg 1582 2024-08-29T11:44:36.495142 image/jpeg 555590 2023-09-15T02:05:29 application/octet-stream application/zip 627026 2024-08-29T11:44:35.529145 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