Holst, Helge, 1871- The atom and the Bohr theory of its structure; an elementary presentation / by H.A. Kramers and Helge Holst, with a foreword by Sir Ernest Rutheford.

Holst, Helge, 1871-

The atom and the Bohr theory of its structure; an elementary presentation / by H.A. Kramers and Helge Holst, with a foreword by Sir Ernest Rutheford.

Bohr, Niels, 1885-1962.

Atomic theory.

Kramers, H. A., 1894-

Lindsay, Robert Bruce, 1900- translator.

Lindsay, Rachel Tupper Easterbrooks, joint translator.