[The discovery of the tropics: Williams College's expedition to Venezuela in 1867].
D005101:Expeditions / Q000266:history*; D049672:History, 19th Century; D006801:Humans; D012586:Science / Q000266:history*; D014481:United States; D014495:Universities / Q000266:history*; D014687:Venezuela
El descubrimiento del trópico. La expedición del Williams College a Venezuela en 1867.