TY  - BOOK
AU  - Subrahmanyam; Brij Lal and Avadhanulu
TI  - A text book of optics
SN  - 9788121926119
U1  - 535  SUB-T 
PY  - 2016///
CY  - S Chand & Co. Pvt. Ltd., New Delhi
KW  - Optics
ER  -