000
00349nam a2200145Ia 4500
020
_a
9788121933247
082
_b
2640
_a
530
100
_a
"RICHARDS JOHN"
245
0
_a
SCIENCE FACTORY LIGHT & SIGHT
260
_b
S.CHAND PUBLISHING
_a
DELHI
_c
2011
300
_a
31
944
_c
R
999
_c
653174
_d
653174