TY  - BOOK
AU  - Sampath, K. and Others
AU  - Pannserselvam, A. ; jt. auth.
AU  - Santhanam, S. ; jt. auth.
TI  - Introductions to educational technology
U1  - 370.1 
PY  - 1984///
CY  - New Delhi
PB  - Sterling
ER  -