TY  - BOOK
AU  - Kumar, K.L. 
TI  - Educational technology: a practical textbook for students, teachers, professionals and trainers 
SN  - 9788122408331
U1  - Res 371.33 K960 1997 
PY  - 1997///.
CY  - New Delhi, India
PB  - New Age International Ltd.
KW  - Education -- Audio-visual aids.
KW  - Educational technology.
KW  - Teaching -- Aids and devices.
N1  - Includes bibliographical references.
ER  -