TY  - BOOK
AU  - Mangal, S. K.
AU  - Mangal, Uma
TI  - Shiksha takniki
SN  - 9788120337244
U1  - 371.3078 MAN-S 
PY  - 2019///
CY  - Delhi
PB  - PHI Learning
KW  - Educational Technology
ER  -