TY  - BOOK
AU  - Beiser,Arthur
AU  - Choudhari,S Rai
TI  - Concepts of modern physics
SN  - 9780070151550
U1  - 539 
PY  - 2015///
CY  - NewDelhi
PB  - Mcgrawhill
KW  - Time dilation
KW  - Mass & energy
ER  -