Fox, Charles, 1876-1964. Educational psychology, its problems and methods / Charles Fox. - 4th ed., completely rev. and rewritten. - London: Routledge & Paul, 1950 - viii, 388 p. : diagrs. 23 cm. "References": p. 369-380. Subjects--Topical Terms: Educational psychology. Dewey Class. No.: 370.15 / FOE 1950