TY  - BOOK
AU  - Siann, Gerda
TI  - Educational psychology in a changing world
SN  - 0043700993
AV  - LB1051.S52 
PY  - 1980///
CY  - : London
PB  - George Allen and Unwin
KW  - Educational psychology
N1  - Includes bibliographies and index
ER  -