http://www.gutenberg.org/ebooks/author/55877.opds 2024-11-14T05:25:11Z Books by Holst, Helge (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 2024-11-14T05:25:11Z https://sendtokindle.compellingsciencefiction.com/ebooks/70708.opds The atom and the Bohr theory of its structure : an elementary presentation Hendrik Anthony Kramers and Helge Holst