000 00262nam a2200109Ia 4500
008 190719s9999 xx 000 0 und d
100 _aP N Chopra
245 0 _aPrinciples of economics
260 _aLudhiana
_bKalyani Pub
_c1997
650 _aEconomics
942 _cBK
999 _c9793
_d9793