A Simple Classification of the Present and Future Stages of Manned Flight

Strughold, Hubertus O.2017-09-202017-09-201955-03-21MS120-1-8http://hdl.handle.net/2152.3/3664Luncheon Speech given at the business meeting of the Space Medicine Association in Washington, D.C.Space medicine.A Simple Classification of the Present and Future Stages of Manned Flight