00000nam a2200000 a 4500 20251203090738.0 338.52, LEF/ECP LEFTWICH, RICHARD H. PRICE SYSTEM AND RESOURCE ALLOCATIONECONOMICS CHICAGO DRYDEN PRESS 1979 488P. ECONOMICS DEMAND COSTS AND SUPPLY WELFARE-EQUILIBRIUM RESOURCE PRICES ENGLISH _ 27780 C 18521 18521 0 0 0 0 PU PU 1999-01-13 0 338.52, LEF/ECP 27780 BK