TY  - BOOK
AU  - Mangal,S K.
AU  - Mangal,Uma
TI  - Essentials of educational technology
SN  - 9788120337237
U1  - 371.33 MAE 23
PY  - 2009///
CY  - New Delhi
PB  - PHI Learning Private Limited
KW  - Education
KW  - Technology
N1  - Includes index
ER  -