TY  - GEN
AU  - Chenglei, W Melemnganba 
AU  - Ali, Ishrat 
AU  - Singh, Dharamveer 
TI  - NTA CSIR UGC NET /SET Physical sciences 
SN  - 9789357013550 (pb)
U1  - 378.1662 CHE/NTA  
CY  - New delhi
PB  - Arihant publication
ER  -