Puerto Rico, 7.5 minute series (topographic) /
Geological Survey (U.S.)
Puerto Rico.Department of Public Works.
Washington, D.C. : U.S. Geological Survey,
1938-1941.
Relief shown by contours and spot heights.
Early sheets lack series title.
7.5 minute series (topographic), Puerto Rico.
Text and diagrams on verso.
A few sheets only.
Guanica -- Parguera -- Cabo Rojo -- Puerto Real