Scale 1:250,000. [1 cm = 2.5 km] ; Transverse Mercator projection (W 116 0--W 114 0/N 32 0--N 31 0).
Note
Geological formations, stratigraphic layers and fault lines indicated by use of color overprints and shading. Relief shown by contours and spot heights. Shows highways and roads, boundaries, airports, rivers and streams, and other details. Includes location index map. On verso: "Información complementaria" and table of geologic strata. A topographic edition of this map also exists. "Edicion semiautomatizada experimental."