TY  - BOOK
AU  - Subrahmanyam, N.
AU  - Lal Brij.
TI  - Principles of physics
U1  - 530 
PY  - 1991///
CY  - New Delhi
PB  - S.chand and company
KW  - Gravity
KW  - Machines
KW  - Physics
ER  -