000 00252nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aNCERT
245 0 _aSamajik Vigyan Ka Shikshan 1.5
260 _aNCERT
_bNCERT
_c2007
300 _a12p.
942 _cBK
999 _c14144
_d14144