http://www.gutenberg.org/ebooks/author/39635.opds 2024-12-22T15:47:41Z Books by Hobbs, Leonard S. (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 2024-12-22T15:47:41Z https://sendtokindle.compellingsciencefiction.com/ebooks/38739.opds The Wright Brothers' Engines and Their Design Leonard S. Hobbs