Spangenburg, Ray, 1939- Niels Bohr : : gentle genius of Denmark / [electronic resource] / Ray Spangenburg and Diane K. Moser.. — New York : : Facts on File,, c1995.. — xi, 116 p. : : ill. ; 24 cm. - Makers of modern science.
Includes bibliographical references (p. 108-112) and index.