Lindgren, Henry Clay, Educational psychology in the classroom. - 3d ed. - New York Wiley [1967] - xx, 686 p. illus. 25 cm. Bibliography: p. 647-677. LCCN: 91670125 Subjects--Topical Terms: Educational psychology LC Class. No.: LB1051 / .L67 1956 Dewey Class. No.: 370.15