TY  - BOOK
AU  - Mangal, S.K.
AU  - Mangal, Uma
TI  - Essentials  of Education Technology
SN  - 9.79E+12
U1  - 371.33  
PY  - 2009///
CY  - New Delhi
PB  - PHI Learning
KW  - Education
KW  - Educational technology
ER  -