TY  - BOOK
AU  - Sampath,K.
AU  - Pannirselvam,A.
AU  - Santhanam,S.
TI  - Introduction to educational technology
SN  - 9788120720749
U1  - 371.3028 SAM 
PY  - 1981///
CY  - New Delhi
PB  - Sterling
KW  - Educational technology
N1  - Includes index.
ER  -