TY  - GEN
AU  - Cocharan, Lee W
AU  - Dekieffer, R.E.
TI  - Manual of audio visual techinque
U1  - 371.335 020 2 DEK 
CY  - USA, Prentice -Hall Inc
KW  - Audio - visual techniques/ teaching meterials - projected/ teaching meterials - non projected
ER  -