00234nam a2200097 a 450000500170000008200220001710000220003924500270006126000290008830000190011720251203090635.0  a338.501,bBIL/ECP  aBILAS, RICHARD A.  aMICRO ECONOMICS THEORY  aDELHIbMCGRAW-HILLc1972  aX,362P., 22CM.