TY  - BOOK
AU  - Reddy, Yella N.
TI  - Audio visual aids: in teachnig, training and extension 
SN  - 819008410
U1  - 371.33 
PY  - 1998///
CY  - Hyderabad
PB  - Haritha publishing house
KW  - Education
KW  - Audio visual education
N1  - Includes glossary
ER  -