1994 EDUCATIONAL PSYCHOLOGY: A Developmental Approach/ Norman A. Sprinthall, Richard C. Sprinthall, Sharon N. Oja. - 6th ed.: - New York : McGraw-Hill 1994 - xxi, 677p. ill.:graphs, pictures, photos,polygons, tables: 27cm ISBN: 0070605475 LC Class. No.: LB105 / .S457 1994