TY  - BOOK
AU  - Mangal, S. K.
AU  - Mangal, Uma
TI  - Essentials of educational technology
SN  - 978-81-203-3723-7
U1  - 371.33  23rd.ed.
PY  - 2011///
CY  - New Delhi
PB  - PHI Learning
KW  - Educational technology
KW  - Education--Technological innovations
UR  - www.phindia.com
ER  -