TY  - BOOK
AU  - Rather,A.R.
TI  - Essentials of instructional technology
SN  - 81-7141-818-X
U1  - 371.334 
PY  - 2004///
CY  - New Delhi
PB  - Discovery
KW  - Audio-Visual aids
KW  - Education
KW  - Teaching device
N1  - UBH
ER  -