TY  - BOOK
AU  - De Kieffer,Robert E.
AU  - Cochran,Lee W.
TI  - Manual of audio-visual techniques
T2  - Prentice-Hall education series
U1  - 371.33 
PY  - 1955///
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - Audiovisual education
KW  - Local
ER  -