370.15 G Gates, Arthur Trving, 1890 - Educational psychology, by Arthur I. Gates, Arthur T. Jeraild, T. R. McConell and Robert C. Challman. [Madison, Wis.] Pub. for the United States Armed Forces institute by Mcmillan Company [1944] 2h. diagrs., tablas. 19 cm. ([United States] Ward Dep. Educational manual, en 917) Bibliografia al final de los capitulos.