19th Aerospace Mechanisms Symposium : proceedings of a symposium sponsored by the National Aeronautics and Space Administration, Washington, D.C., the California Institute of Technology, Pasadena, California, and the Lockheed Missiles and Space Company, Inc., Sunnyvale, California, and held at NASA Ames Research Center, Moffett Field, California, May 1-3, 1985 (NASA conference publication, 1985)