by Hillard, G. Barry
[Washington, DC] : [Springfield, Va. : National Aeronautics and Space Administration ; For sale by the National Technical Information Service, 1992]
by Schunk, R. W
[Washington, DC] : [Springfield, Va.? : National Aeronautics and Space Administration ; National Technical Information Service [distributor], 1990]
by Hillard, G. Barry
[Washington, DC : Springfield, Va. : National Aeronautics and Space Administration ; National Technical Information Service, distributor, 1993]