AMS 1. Alternate title: Yosu, Korea. In upper left margin: Korea city plans 1:10,000. Polyconic Projection. Relief shown by 20 meter contour intervals and spot elevation. Polyconic projection. Korean names transcribed according to the McCune-Reishauer system, Japanese form of Korean names (shown in parentheses) transcribed according to the modified Hepburn (Romaji) System.