Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; Hanover MD : Available from NASA Center for AeroSpace Information (CASI), [2001]
2001
Ryan, Robert S. (Robert Samuel), 1925-
[Washington, D.C.] : National Aeronautics and Space Administration, Scientific and Technical Information Branch ; Springfield, Va. : For sale by National Technical Information Service, 1989.
1989