Volcanic ash and aviation safety : proceedings of the First International Symposium on Volcanic Ash and Aviation Safety /
International Symposium on Volcanic Ash and Aviation Safety(1st :1991 :Seattle, Wash.)
Casadevall, Thomas J.
Air Line Pilots Association.
Washington : U.S. G.P.O. ; Denver, CO : For sale by U.S. Geological Survey, Map Distribution,
1994.
"Proceedings of the First International Symposium on Volcanic Ash and Aviation Safety held in Seattle, Washington, in July 1991."
Includes bibliographical references.
Volcanic ash, tuff, etc.
Aeronautics