TY  - BOOK
AU  - Hanson,John
AU  - Porter,James
TI  - The use of resources /  
SN  - 004371028X
U1  - 371.3 HAN 
PY  - 1975///.
CY  - London : 
PB  - George Allen & Unwin Ltd., 
KW  - Audio-visual education
KW  - Instructional materials centers
KW  - Teaching--Aids and devices
N1  - Includes index.
ER  -