Inter American Geodetic Survey. North Decimal Degree -19.500000. South Decimal Degree -19.666667. East Decimal Degree -68.000000. West Decimal Degree -68.250000. Alternate title: Tauca, 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 key to abbreviations.