Spangenburg, Ray Niels Bohr : gentle genius of Denmark / Ray Spangenburg and Diane K. Moser - New York : Facts on File, 1995 - 116 p. : ill. ; 24 cm. - Makers of modern science . ISBN: 0816029385 RM52.14 Subjects--Personal Names: Bohr, Niels Henrik David, 1885-1962 Subjects--Topical Terms: Physics--HistoryPhysicists--Denmark--Biography