TY  - GEN
AU  - Ellington , Henry
AU  - Percival , Fred
AU  - Race , Phil
TI  - Handbook of Educational Technology
PY  - 1993///
PB  - Kogan page
KW  - Educational technology
KW  - Evaluation
KW  - Mass Media in Education
KW  - Training
KW  - Computers
KW  - Individualized Learning
ER  -