http://book.klll.cc/ebooks/author/57137.opds?sort_order=title 2025-11-16T04:34:33Z Books by Gregory, Herbert E. (Herbert Ernest) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-16T04:34:33Z https://en.wikipedia.org/wiki/Herbert_E._Gregory See also: en.wikipedia 2025-11-16T04:34:33Z https://book.klll.cc/ebooks/73605.opds century of science in America : with special reference to the American Journal of Science, 1818-1918