000 00259nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aVerma, Anita
245 0 _aGraha Vighyan Shikshan
260 _aNew Delhi
_bVandhana
_c2007
300 _a232p.
942 _cBK
999 _c13106
_d13106