United States. Army Map Service. North Decimal Degree 41.0000. South Decimal Degree 40.0000. East Decimal Degree -7.0000. West Decimal Degree -8.0000. Alternate title: Guarda, Portugal. Polyconic projection. With Portuguese-English glossary. Relief shown by 100 m. contour interval, gradient tint and spot heights. Standard map series designation: A.M.S. M581. "Compiled from Portugal, 1:50,000, Servicos Geodesicos, 1933-35; Portugal, 1:100,000, Servicos Geodesicos, 1875-99; Portugal, 1:250,000, Estador Maior do Exercito, 1934-38; Spain and Portugal Road Map, 1:400,000, AMS, sheets 44 and 46, Third Edition, 1943; Railways in Spain and Portugal 1:1,500,000, GSGS, 1942, corrected from Intelligence Reports, 1942-44.".
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