TY  - BOOK
AU  - K. Mangal, S. 
AU  -  Uma Mangal,
TI  - Essentials of Educational Technology
SN  - 978-81-203-3723-7
U1  - 371.3 
PY  - 2010///
CY  - New Delhi
PB  - PHI Learning Pvt. Ltd.
KW  - EDUCATION
ER  -