000 00249nam a2200109Ia 4500
001 5820
008 231023s9999 xx 000 0 und d
100 1 _a[sin autor]
245 1 0 _aEE.UU. y América Latina
260 _aProgreso 1980,
_c1980
999 _c46182
_d46182
942 _n1