Reports of explorations and surveys for the location of interoceanic ship-canals through the Isthmus of Panama, and by the valley of the River Napipi, by U. S. naval expeditions. 1875 by United States. Navy Dept.

Reports of explorations and surveys for the location of interoceanic ship-canals through the Isthmus of Panama, and by the valley of the River Napipi, by U. S. naval expeditions. 1875