TY  - BOOK
AU  - Shivani
AU  - Kanwar, Shefali
AU  - Shukla, Pramila
TI  - Concepts of modern physics
SN  - 9788194746386
U1  - 530 SHI 
CY  - New Delhi
KW  - Atom
KW  - Modern physics
KW  - Radioactivity
ER  -