000 00293nam a22001217a 4500
999 _c1420
_d1420
003 OSt
008 121012t xxu||||| |||| 00| 0 eng d
100 _aNCERT
_9985
245 _aविज्ञान /Sceicne (Class X)
260 _aNew Delhi
_bNCERT
_c1990
300 _a246p
942 _2ddc
_cNCERT