http://book.klll.cc/ebooks/subject/8099.opds 2025-08-05T03:30:42Z Books about Airplanes -- Piloting (sorted by popularity) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-08-05T03:30:42Z https://book.klll.cc/ebooks/27557.opds Learning to Fly: A Practical Manual for Beginners Claude Grahame-White and Harry Harper