TY  - GEN
AU  - Khanna, P.N.
ED  - National Council of educational Research and Training
TI  - Audio-visual training materials: a source guide
U1  - 371.835 20
PY  - 1971///
CY  - New Delhi
PB  - Secretary Ntl. Council of Educational Research and Training
KW  - Audio-visual education
KW  - Audio-visual training materials - Hand books, manuals
N1  - Includes index
ER  -