http://www.gutenberg.org/ebooks/author/55074.opds 2024-11-09T02:37:02Z Books by Stewart, Balfour (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 2024-11-09T02:37:02Z https://en.wikipedia.org/wiki/Balfour_Stewart See also: en.wikipedia 2024-11-09T02:37:02Z https://sendtokindle.compellingsciencefiction.com/ebooks/69053.opds The conservation of energy Balfour Stewart