TY  - BOOK
AU  - Mukhopadhyay, M.,
TI  - Educational technology: challenging issues 
AV  - LB1028.3 .E38 1990
PY  - 1990///
CY  - New Delhi
PB  - Sterling Publishers Private Limited
KW  -  	Educational technology
N1  - Includes bibliographical references and index
ER  -