000			00356nam a2200145Ia 4500
008			231129s1998||||xx |||||||||||||| ||spa||
020			_a84-481-0607-5
040			_bspa
082			_a330 S193e
100			_aSamuelson Paul A.
245		0	_aEconomí­a
260			_c1998
264			_aMcGraw-Hill
942			_2ddc _cBKS
999			_c9881 _d9881