TY  - BOOK
AU  - Mangal, S.K.
AU  - Mangal,Uma.
TI  - Essentials of educational technology
SN  - 9788120337237
AV  - LB 1028.3 .M36 2009 
PY  - 2009///
CY  - New Delhi
PB  - PHL learning
KW  - Educational technology
KW  - Education
N1  - include index and bibliographic references
ER  -