000
00278nam a2200121Ia 4500
008
151205s9999||||xx |||||||||||||| ||und||
020
_c
0
100
_a
MATHUR,B.K.
245
_a
PRINCIPLES OF OPTICS
260
_c
1967
_b
GOPAL PRINTING PRESS
650
_a
OPTICS
942
_c
BK
999
_c
280167
_d
280167