Casadevall, T. J., (ed.), 1994, Volcanic ash and aviation safety: proceedings of the first international symposium, Seattle, Washington, July 1991: U.S. Geological Survey Bulletin 2047, 450 p., available at http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=3768 .
Citation Updated: 2005-06-10 00:04:10