000
00375nam a2200121Ia 45e0
008
181001s1968 xx 000 0 und d
100
_a
B.K. Mathur
245
0
_a
Intd. To geometrical & physical optics
250
_a
7th
260
_a
Kanpur
_b
Gopal Press Kanpur
_c
1968
300
_a
535
942
_2
ddc
_c
BK
999
_c
471
_d
471