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Aec--Nasa Space Nuclear Propulsion Office. Preliminary Report on the Nerva Radiation Environment
Radiation Exposure to Crew During Operation of a Manned Nuclear Space Vehicle
Nerva-Rift Thrust Vector Control/Mechanical/Shielding Interface Review Meeting
Preliminary Candidate List for Preferred Parts, Rift Stage
Environmental Safety Aspects of Nuclear Rocket Flight Operations. Semi-Annual Progress Report
Human round trip to Mars: Six months and radiation safe. Revision