TY  - GEN
AU  - N.Subrahmanyam
TI  - A Text book of Optics
SN  - 8121926114
U1  - 535.21 22
PY  - 1966///
CY  - New Dhelhi
PB  - S. Chand & Company Ltd
KW  - Optics
N1  - Physics
ER  -