TY  - BOOK
AU  - Sehgal, N.K. and Chopra, K.L
AU  - Sehgal, D.L.
TI  - Modern Physics
SN  - 9788180549526
U1  - 539 SEN M 22
PY  - 2010///
CY  - New Delhi
PB  - Sultan Chand & Sons
ER  -