000
00245nam a2200109Ia 4500
008
230512s9999 xx 000 0 und d
100
_a
aggarwal ,P.K
245
0
_a
IIT physics
260
_c
2000
_a
meerut
_b
krishna
650
_a
physics
942
_c
BK
999
_c
6458
_d
6458