000 00343nam a2200157Ia 4500
008 180323s9999 xx 000 0 und d
082 _a507.1
100 _aMangal,Meenu
245 0 _aVigyan shikshan
250 _a1st
260 _aMeerut
_bMeerut
_c2008
300 _a255
500 _a3547
650 _aScience - teaching
942 _cBOOK
999 _c9354
_d9354