Williams, Robert Daniel. Background of contemporary psychology, by Robert D. Williams, PH. D. and Roger M. Bellows, PH. D. - Columbus, O., H. L. Hedrick, c1935. - 319 p. illus. diagrs. 23 cm. Mimeographed. LCCN: ca 35000312 Subjects--Topical Terms: Psychology--History. LC Class. No.: BF95 / .W5 Dewey Class. No.: 150.9