00510 a2200181 4500 Eng 370.15 EL59e Ellis, Robert Sidney 17525 Educational psychology; a problem approach Princeton Van Nostrand 1951 xi,546p. diagrs Bibliography at the end of chapters Educational psychology 999 Education ddc GEN mental health Personality development 1155 57930 57922 0 0 ddc 0 0 TUCL TUCL 2011-02-16 0 370.15 EL59e 28822 2011-02-16 00:00:00 2011-02-16 GEN