Judd, charles H. Educational psychology / Charles H. Judd - Boston : Houghton Mifflin, 1939 - 566 p. : ill. ; 24 cm. At head of title: Gage/Berliner. Includes indexes. Bibliography: p. 754-791. Subjects--Topical Terms: Educational psychology. Dewey Class. No.: 370.15 / JUE 1939