http://book.klll.cc/ebooks/author/55862.opds?sort_order=release_date 2025-11-17T10:34:35Z Books by Lindsay, Robert Bruce Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-17T10:34:35Z https://en.wikipedia.org/wiki/Robert_Bruce_Lindsay See also: en.wikipedia 2025-11-17T10:34:35Z https://book.klll.cc/ebooks/70708.opds The atom and the Bohr theory of its structure : an elementary presentation Hendrik Anthony Kramers and Helge Holst