The Physics and chemistry of interStellar molecular clouds. proceedings of the 2nd Cologne-Zermatt Symposium on the Physics and chemistry of interStellar molecular clouds, held in Zermatt, Switzerland, 21-24 Sept.ember 1993
edited by Guido C. Pelz and Gisbert Winnewisser
- Berlin Springer-Verlag 1995
- [various pagings.]