TY  - BOOK
AU  - Mangal,S K
AU  - Mangal,Uma
TI  -  शिक्षा तकनीकी/Educational Technology 
SN  - 9788120337244
U1  - 370.024 6 MAN 
PY  - 2009///
CY  - New Delhi
PB  - PHI Learning
KW  - Educational Technology
UR  - https://books.google.co.in/books?id=StCMRW_eDeEC&pg=PA1&source=gbs_toc_r&cad=3#v=onepage&q&f=false
ER  -