000
00278nam a2200109Ia 4500
008
200906s9999 xx 000 0 und d
082
_a
535 S495
100
_a
SETHI,N.K
245
0
_a
TEXT BOOK OG OPTICS FOR JUNIOR STUDENTS
260
_b
PREMIER PUB.CO, DELHI
_c
1957
942
_c
BK
999
_c
62380
_d
62380