00523nam a22001697a 450000500170000000800410001702000150005805000230007310000200009624500510011625000110016726000580017830000340023650400320027065000210030270000300032320181008091048.0181008b        ilu||||| |||| 00| 0 eng d  a067316675904aHB171.5 bB97 19871 aByrns, Ralph T.10aEconomics c/ Ralph T. Byrns, Gerald W. Stone.  a3a ed.  aGlenview, Il. : bScott Foresman and Company, cc1987  axxxi, 796 p. :bil. ;c26 cm.  aIncluye glosario e índice 72lembaEconomía1 aStone, Gerald W., eautor