http://book.klll.cc/ebooks/author/53984.opds?sort_order=release_date 2025-11-16T11:38:27Z Books by United States. Army Air Forces Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-16T11:38:27Z https://en.wikipedia.org/wiki/United_States_Army_Air_Forces See also: en.wikipedia 2025-11-16T11:38:27Z https://book.klll.cc/ebooks/66799.opds Ditching Procedure, B-29s with Four-Gun Turret United States. Army Air Forces