TY  - BOOK
AU  - N K SETHI S B RAIZADA S D CHOUBEY
TI  - TEXT BOOK OF OPTICS
U1  - TR 536 SE75 T5 
PY  - 1965///
CY  - NEW DELHI
PB  - PREMIER PUBLSHING CO.
KW  - TEXT BOOK OF OPTICS
N1  - MODERN BOOK HOUSE
ER  -