000
00251nam a2200109Ia 4500
008
230512s9999 xx 000 0 und d
100
_a
gupta k.k
245
0
_a
science &technology class 6th
260
_a
delhi
_b
ncert
650
_a
science
942
_c
BK
999
_c
6949
_d
6949