TY - BOOK T1 - Volcanic ash and aviation safety :proceedings of the First International Symposium on Volcanic Ash and Aviation Safety / DA - 1994. CY - Washington : CY - Denver, CO : AU - Casadevall, Thomas J. VL - 2047 CN - QE75 CN - QE75 PB - U.S. G.P.O. ; PB - For sale by U.S. Geological Survey, Map Distribution, PP - Washington : PP - Denver, CO : PY - 1994. N1 - "Proceedings of the First International Symposium on Volcanic Ash and Aviation Safety held in Seattle, Washington, in July 1991." ID - 160152 KW - Volcanic ash, tuff, etc. KW - Aeronautics TI - Volcanic ash and aviation safety :proceedings of the First International Symposium on Volcanic Ash and Aviation Safety / ER -