Ëé |
Í |
§ |
¢è |
Ò |
Ç |
 |
 |
 |
 |
 |
 |
 |
 |
 |
- American Institute of Chemical
Engineers (USA)
http://www.aiche.org
- American Chemical Society (USA)
http://www.chemistry.org
- Institution of Chemical Engineers (Europe)
http://www.icheme.org