TY  - BOOK
AU  - Subrahmanyam, N.
AU  - Lal, Brij [Author] 
AU  -  Avadhanulu, M. N [Author].
TI  - A Textbook of Optics 
SN  - 9788121926119
U1  - 535 
CY  -  S. Chand & Company Ltd, 2012
KW  - Physics Optics
ER  -