TY  - BOOK
AU  - Sehgal, N.K.
AU  - Chopra, K.L.
AU  - Sehgal, D.L.
TI  - Modern physics
SN  - 9788180549526
U1  - 539 23
PY  - 2013///
CY  - New Delhi
PB  - Sultan Chand and Sons
KW  - Physics
N1  - includes index
ER  -