000 00278nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aSingh, Yogesh Kumar
245 0 _aRasayan Vigyan Aadhunik Shikshan Vidihya
260 _aDelhi
_bA.P.H.
_c2010
300 _a171p.
942 _cBK
999 _c13401
_d13401