About HARD A
About Chalmers Univ. Technol., Goeteborg, SWE
About SIVIK L
About Royal Inst. Technol., SWE
About TONNQUIST G
About Royal Inst. Technol., SWE
About Color Research and Application
About color system
About Sweden
About Color
About NCS
About 表色系
About 考え
About 研究
About 応用