TY  - BOOK
AU  - S K Mangal,
AU  - S K Mangal,
AU  - Uma Mangal,
TI  - Essentials of educational technology
SN  - 9788120337237
U1  - 371.33 
PY  - 2018///
CY  - Delhi
PB  - Phi learning private limited
KW  - Schools & their activities special education
ER  -