| Registros del 1 al 2 de 2 encontrados |
1.- PRELIMINARY GEOLOGIC MAP OF SOUTHERNMOST TEXAS, UNITED STATES, AND PARTS OF TAMAULIPAS AND NUEVO LEON, MEXICO; ENVIRONMENTAL HEALTH INVESTIGATIONS IN THE UNITED STATES-MEXICO BORDER REGION
U. S. GEOLOGICAL SURVEY; RESTON, VA; USA; UNITED STATES, 2005
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2.- Preliminary geologic map of the Laredo, Crystal City-Eagle Pass, San Antonio, and Del Rio 1 degrees X 2 degrees quadrangles, Texas, and the Nuevo Laredo, Ciudad Acuna, Piedras Negras, and Nueva Rosita 1 degrees X 2 degrees quadrangles, Mexico
U. S. Geological Survey; Reston, VA; USA; United States, 2009
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