http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Zapata, Texas--Tamaulipas--Nuevo Leon, 1985
1:100 000-scale metric topographic map : 30 x 60 minute series (topographic)
produced by the United States Geological Survey.
Relief shown by contours and spot heights.
Filing title: Zapata, Texas-Tamaulipas-Nuevo Leon.
"Reprinted 1993 with changes"--The Survey.
"Mexico portion derived from DGG 1:50 000-scale topographic maps dated 1978. La La Jilla G14A58, Miragua G14A59, Nueva Cuidad [sic] Guerrero G14A69."
Includes location map and index to adjoining maps.
Scale 1:100,000. 1 cm. on the map represents 1 km. on the ground ;