000 00246nam a2200097Ia 4500
008 190719s9999 xx 000 0 und d
100 _aR.S. Singhal & others
245 0 _aVitiea Lekhankan
260 _aN.Delhi
_bV.K. Publication
_c2004
942 _cBK
999 _c11961
_d11961