TY  - BOOK
AU  - Mukhopadhyay, M.
TI  - Educational technology : : challenging issues
SN  - 81-207-1087-8
U1  - 371.331 M869G 
PY  - 1990///
CY  - Banglore
PB  - : Sterling Publishers
KW  - Educational technology - Issues - Congresses
ER  -