http://book.klll.cc/ebooks/author/55857.opds?sort_order=title 2025-11-15T10:59:19Z Books by Lindsay, Rachel T. Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-15T10:59:19Z https://book.klll.cc/ebooks/70708.opds atom and the Bohr theory of its structure : an elementary presentation Hendrik Anthony Kramers and Helge Holst