Manhours of Manned Space Flight as of 1-25-74

2018-04-162018-04-161974-01-25http://hdl.handle.net/2152.3/7995A presentation slide with heading Manhours of Manned Space Flight, and includes data for the United States and the USSR, up until January 25, 1974.Dr. Charles BerryManhours of Manned Space FlightUSSRSpace Medicinepresentation slidedataManhours of Manned Space Flight as of 1-25-74