http://book.klll.cc/ebooks/author/46164.opds?sort_order=release_date2025-11-18T09:41:33ZBooks by Wright, G. Frederick (George Frederick)Free eBooks since 1971.Project Gutenberghttps://book.klll.ccwebmaster@gutenberg.orghttps://book.klll.cc/gutenberg/favicon.ico2512025-11-18T09:41:33Zhttps://en.wikipedia.org/wiki/George_Frederick_WrightSee also: en.wikipedia2025-11-18T09:41:33Zhttps://book.klll.cc/ebooks/50957.opdsMan and the Glacial PeriodG. Frederick Wright