000
00242nam a2200097Ia 4500
008
150310s9999 xx 000 0 und d
100
_a
SUBRAHMANYAM N & BRIJ LAL
245
2
_a
A TEXT BOOK OF OPTICS
250
_a
22
260
_c
1997
_b
S CHAND & CO
999
_c
23856
_d
23856