Bolivia. Instituto Geografico Militar. North Decimal Degree -20.5000. South Decimal Degree -20.6667. East Decimal Degree -62.2500. West Decimal Degree -62.5000. Alternate title: Villazon (Puesto Militar), Bolivia. Relief shown by 20 m. contour interval and spot heights. Universal transverse Mercator projection. Standard map series designation: Serie H731=[Series] H731. With a glossary.