TY  - BOOK
AU  - Subrahmanyam N 
AU  -  Lal Brij, Avadhanulu M.N
TI  - TextBook of Optics
SN  - 9788121926119
U1  - 535 SUB 
PY  - 2015///
CY  - New Delhi
PB  - S.Chand Pub.
KW  -  Avadhanulu M.N
KW  - Lal Brij
KW  - Optics
KW  - Subrahmanyam N
ER  -