The physics and chemistry of interstellar molecular clouds : mm and sub-mm observations in astrophysics : proceedings of a symposium held at Zermatt, Switzerland, 22-25 September 1988 to commemorate the 600th anniversary of the University of Cologne and the 20th anniversary of the Gornergrat Observatory
G. Winnewisser, J.T. Armstrong (eds.)
Bok Engelsk 1989