2018-12-202018-12-201976https://hdl.handle.net/2152.3/11046A memorandum from Lawrence Dietlein at NASA regarding Space Shuttle Crew Exercise requirementsExercise RequirementLawrence DietleinDr. William ThorntonresearchexercisetreadmillSpace MedicinememorandumTreadmill_71-81_1_ExerciseRequirement_Dietlein_05.26.76