Columbia subject headings:
Harvard subject headings:
Humboldt, Alexander von, 1769-1859--Travel--Latin America.
Latin America--Description and travel--In literature.
Latin America--Description and travel.
Scientific expeditions--Mexico.
Princeton subject headings:
Humboldt, Alexander von, 1769-1859--Travel--Latin America.
Humboldt, Alexander von, 1769-1859--Travel--Mexico.
Latin America--Description and travel.
Mexico--Description and travel.
Scientific expeditions--Latin America--History--19th century.
Scientific expeditions--Mexico--History--19th century.