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The Aerospace year book.

Washington, Books, Inc. 1970

First International Symposium on Volcanic Ash and Aviation Safety : program and abstracts : Seattle,

International Symposium on Volcanic Ash and Aviation Safety (1st : 1991 : Seattle, Washington)
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. 1991

20th Aerospace Mechanisms Symposium proceedings of a symposium cosponsored by National Aeronautics a

Aerospace Mechanisms Symposium (20th : 1986 : Cleveland, Ohio)
[Washington, D.C.] : National Aeronautics and Space Administration, Scientific and Technical Information Branch ; [Hanover, Md.] : Available from the NASA Center for AeroSpace Information, 1986. 1986