sponsored by the National Aeronautics and Space Administration and the Federal Aviation Administration and held at Langley Research Center, January 8-9, 1987 ; compiled by Frederick R. Morrell
sponsors, California Division of Mines and Geology [and others] ; editor and chairman of organizing committee, Walter W. Hays ; compiled by Pamela D. Andriese
sponsored by the National Aeronautics and Space Administration and the Federal Aviation Administration and held in Atlantic City, New Jersey, December 16, 1983 ; compiled by Frederick R. Morrell