000 00277nam a2200109Ia 4500
008 190719s9999 xx 000 0 und d
100 _aR D Gupta & T N Sachdeva
245 0 _aElements of economic theory
260 _aDelhi
_bGurdas Kapoor
_c1971
650 _aEconomics
942 _cBK
999 _c423
_d423