First International Symposium on Volcanic Ash and Aviation Safety : program and abstracts : Seattle, Washington, July 8-12, 1991 / edited by Thomas J. Casadevall ; sponsored by Air Line Pilots Association ... [et al.], co-sponsored by Aerospace Industries Association of America ... [et al.].
Imprint
Denver, CO : U.S. Dept. of the Interior, U.S. Geological Survey : Available from the Books and Open-File Reports Section, U.S. Geological Survey, 1991.
