00297nam a2200121Ia 450000500170000000800410001704100120005808200150007010000170008524500510010226000090015365000130016220180901140700.0180829s9999||||ii |||||||||||||| ||eng||  aEnglish  a330.9 bDA  aDas Gupta, A 0aEconomic and commercial geographycA Das Gupta  c1978  aCommerce