TY  - BOOK
AU  - SUBRAHANYAM, N.
AU  - BRIJ LAL, AVADHANULU, M.N
TI  - A TEXT BOOK OF OPTICS
SN  - 8121926114
U1  - 535.2/SUB/LAL 
PY  - 2008///
CY  - NEW DELHI.
PB  - S. CHAND & CO. LTD., NEW DELHI.
ER  -