TY  - BOOK
AU  - Subrahmanyam N
AU  - Lal Brij
TI  - A Textbook of Optics 
SN  - 9788121926119
U1  - 535 SUB 
PY  - 2018///
CY  - New Delhi
PB  - S Chand
KW  - Physics
ER  -