TY  - BOOK
AU  - Siann Gerda
AU  -  Ugwuegbu Denis C. E.
TI  - Educational psychology in a changing world
SN  - 0-04-445157-1
PY  - 1989///
CY  - London, UK
PB  - Unwin Hyman Ltd. 
KW  - Education - Psychology
ER  -