Alexander Von Humboldt /
Beck, Hanno.
Alexander Von Humboldt / Hanno Beck ; tr. Carlos Gerhard. - Mexico : FCE, 1971. - 491 p., 2 map. pleg. ; 24 cm.
Humboldt, Alexander Von, 1769-1859 - Biografia.
Q143 / .H8 B42
Alexander Von Humboldt / Hanno Beck ; tr. Carlos Gerhard. - Mexico : FCE, 1971. - 491 p., 2 map. pleg. ; 24 cm.
Humboldt, Alexander Von, 1769-1859 - Biografia.
Q143 / .H8 B42