http://book.klll.cc/ebooks/author/55074.opds?sort_order=title 2025-11-18T20:34:03Z Books by Stewart, Balfour Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-18T20:34:03Z https://en.wikipedia.org/wiki/Balfour_Stewart See also: en.wikipedia 2025-11-18T20:34:03Z https://book.klll.cc/ebooks/69053.opds conservation of energy Balfour Stewart 2025-11-18T20:34:03Z https://book.klll.cc/ebooks/75232.opds unseen universe : or, physical speculations on a future state Balfour Stewart and Peter Guthrie Tait