I am a member of the following associations.

1. American Chemical Society
2. Society for Applied Spectroscopy
3. The Chemical Society of Japan
4. The Japan Society for Analytical Chemistry
5. Spectroscopical Society of Japan
6. The Society of Polymer Science, Japan
7. Willem Mengelberg Society (USA)
   This society was founded by Mr. Ronald Klett in 1970, and has been held by him alone.