TY  - BOOK
AU  - Hancock,Alan
TI  - Planning for educational mass media
SN  - 058241055X
U1  - 371.33/H234p 
PY  - 1977///
CY  - London; N.Y.
PB  - Longman
KW  - Audio-visual education
KW  - Mass media
N1  - Bibliography and index at the end
ER  -