TY - BOOK T1 - Discussions and recommendations from the Workshop on the Impacts of Volcanic Ash on Airport Facilities, Seattle, Washington, April 26-28, 1993 DA - 1993. CY - [Denver, CO] : AU - Casadevall, Thomas J. VL - 93-518 CN - I 19.76: PB - U.S. Dept. of the Interior, U.S. Geological Survey : PB - For sale by the Books and Open-File Reports Section, U.S. Geological Survey [distributor], PP - [Denver, CO] : PY - 1993. N1 - Distributed to depository libraries in microfiche. N1 - Shipping list no.: 94-0789-M. ID - 197424 KW - Volcanic ash, tuff, etc. KW - Volcanic hazard analysis. TI - Discussions and recommendations from the Workshop on the Impacts of Volcanic Ash on Airport Facilities, Seattle, Washington, April 26-28, 1993 ER -