TY  - BOOK
AU  - Page G Terry Ed.
AU  -  Whitlock Quentin Ed.
TI  - Educational technology twenty years on
T2  - Aspects of educational technology,13
U1  - T:3,1, L9 
PY  - 1979///
CY  - London
PB  - Kogan Page       
KW  -  TEACHING
KW  - EDUCATION
ER  -