TY  - BOOK
AU  - SUBRAHMANYAM (N)
AU  - BRIJ LAL.
TI  - Text book of optics. Ed 11
U1  - 535 SUBT 
PY  - 1981///
CY  - N D
PB  - S. Chand & Co. Ltd.
KW  - Optics
ER  -