TY  - BOOK
AU  - Ellington, Henry
AU  - Percival, Fred
TI  - Handbook of educational technology
SN  - 81-7554-237-3
U1  - 37.01 
PY  - 2003///
CY  - London
PB  - Kogan page Ltd
KW  - Educational technology- Handbooks
KW  - Educational strategies
KW  - Education- Assessment
KW  - Education- Evaluation
ER  -