TY  - BOOK
AU  - Mangal, S.K.,
AU  - Mangal, Uma
TI  - Essentials of Educational Technology / 
SN  - 9788120337237
U1  - 371.335456 22
PY  - 2009///
CY  - New Delhi : 
PB  - Asoke K. Ghosh, 
KW  - Educational technology
KW  - Education
KW  - Elementary
N1  - Includes bibliographic references and index
ER  -