00833cam a2200277 a 4500 4664158 20260420153030.0 820826s1980 enka 000 0 eng 80040892 0043700993 0043701000 pbk. PHSA LB1051 .S4185 1980 370.15 19 Siann, Gerda. Educational psychology in a changing world / Gerda Siann, Denis C.E. Ugwuegbu. London ; Boston : Allen & Unwin, 1980. x, 255 p. : ill. ; 25 cm. Educational psychology. Child development Developing countries. Children Developing countries. Education Developing countries. Ugwuegbu, Denis C. E. ddc BK 3321 3321 0 0 ddc 0 0 300-399 PHSA PHSA CIR 2026-04-20 0 CIR 370.15 S1 1980 3464 2026-04-20 15:30:58 2026-04-20 BK