Includes table of "Astronomical determinations" and "Map of Central America showing the routes proposed for an interoceanic ship-canal." and Relief shown by hachures.
Publisher:
s.n.,
Subject (Geographic):
Atrato River Region (Colombia)--Maps and Truandó River Region (Colombia)--Maps
Subject (Name):
United States. Army. Corps of Topographical Engineers
Subject (Topic):
Hydrographic surveying--Colombia--Atrato River Region--Maps and Hydrographic surveying--Colombia--Truandó River Region--Maps
In upper right margin: No XII., Mostly shows valley of Truandó River., and Profile along the surveyed route; Profile along the proposed ship canal route.
