TY  - BOOK
AU  - Unwin,Derick
AU  - McAleese,Ray
TI  - The Encyclopaedia of educational media communications and technology
SN  - 0313209219
U1  - 371.3078 
PY  - 1978///
CY  - London
PB  - Macmillan Press
KW  - Audio-visual materials
KW  - Dictionaries
KW  - Educational technology
N1  - Includes bibliographies
ER  -