00469nam a2200181Ia 450000500170000000800410001703700150005804000070007308200230008010000210010324500330012425000110015726000360016830000390020465000180024394200090026199900170027020260814110246.0260814t1977    xx            000 0 und d  adonación  aen  aBIB/03.01.01/05929  aMansfield, Edwin 0aPrinciples of microeconomics  a2a. ed  aNew York :b W.W. Norton,c1977  axv, 462 pb. : ilus., grafs., tbls  aMICROECONOMIA  tMJCh  c18959d18959