TY  - BOOK
AU  - Gupta A.,
AU  - Tomar S.,
TI  - Upkara`s CSIR UGC NET, JRF, SET A Physical Science CODE NO. 1551
SN  - 9789350132692
U1  - 500.20712 
CY  - Agra 282002
PB  - Upkar Publication.
ER  -