TY  - BOOK
AU  - PANNIRSELVAM, A.
AU  - SAMPATH, K.
AU  - SANTHANAM, S.
TI  - INTRODUCTION TO EDUCATIONAL TECHNOLOGY
U1  - 371.33 
PY  - 1981///
CY  - New Delhi
PB  - Sterling Publishers Pvt. Ltd., New Delhi 
ER  -