Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 : Personal Narrative of Travels
, by Humboldt, Alexander Von- ISBN: 9781426421242 | 1426421249
- Cover: Paperback
- Copyright: 10/31/2007
The valleys of Aragua form a narrow basin between granitic and calcareous mountains of unequal height.



