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Advanced electric propulsion research, 1989 annual report

Wilbur, Paul J.
[Cleveland, Ohio] : National Aeronautics and Space Administration, Lewis Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1990] 1990

Advanced ion thruster research

Wilbur, Paul J.
Fort Collins, CO : Colorado State University, Department of Mechanical Engineering ; [Springfield, Va. : For sale by the National Technical Information Service, 1985] 1984

Hollow cathode operation at high discharge currents

Friedly, Verlin Joe.
[Cleveland, Ohio] : Lewis Research Center, National Aeronautics and Space Administration ; [Springfield, Va. : For sale by the National Technical Information Service, 1990] 1990

Test bed ion engine development final report

Aston, Graeme.
[Cleveland, Ohio] : National Aeronautics and Space Administration, Lewis Research Center, [1984] 1984