Inter American Geodetic Survey. North Decimal Degree -11.000000. South Decimal Degree -11.166667. East Decimal Degree -68.716667. West Decimal Degree -69.000000. Alternate title: Cobija, 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.