000 00256nam a2200097Ia 4500
008 190719s9999 xx 000 0 und d
100 _aP N Gupta/ K K Bansal
245 0 _aAnkekshan: Siddhaant awam vyavahaar
260 _aNew Delhi
_bR Chand
_c1984
942 _cBK
999 _c7042
_d7042