TY  - BOOK
AU  - Subrahmanyam, N.
AU  - Lal, Brij
TI  - A textbook of optics
U1  - 535 
PY  - 1976///
CY  - New Delhi
PB  - S. Chand & Company Ltd.
KW  - Visible Light (Optics)
KW  - Paraphotic Phenomena
KW  - Optics
ER  -