http://www.gutenberg.org/ebooks/subject/39940.opds 2024-09-19T16:13:23Z Books about Aeronautics, Military -- United States (sorted by popularity) Free eBooks since 1971. Project Gutenberg https://www.gutenberg.org webmaster@gutenberg.org https://www.gutenberg.org/gutenberg/favicon.ico 25 1 2024-09-19T16:13:23Z https://sendtokindle.compellingsciencefiction.com/ebooks/72902.opds Learning to fly in the U.S. Army : a manual of aviation practice E. N. Fales