TY  - BOOK
AU  - MANGAL,S.K.
AU  - MANGAL, Uma 
TI  - Essentials to Educational Technology
SN  -  9788120337237
U1  - 371.33 
PY  - 2010///
CY  - New Delhi
PB  - PHI Learning Private Ltd.
KW  - Education
N1  - includes index
ER  -