TY  - BOOK
AU  - Sita Ram Sharma, 
AU  - Vohra, A.L. 
TI  - Encyclopaedia of educational technology: vol.13 / 
SN  - 81-7041-658-2
U1  - 371.330 3 
PY  - 1993///
CY  - New Delhi
PB  - Anmol
KW  - Educational technology-Encyclopaedias
ER  -