000 00250nam a2200097Ia 4500
008 190719s9999 xx 000 0 und d
100 _aR K Yadav awam anya
245 0 _aSankhyikiye vidhiyan
260 _aNew Delhi
_bNational Pub House
_c1979
942 _cBK
999 _c3950
_d3950