2018-12-202018-12-201976-03-29https://hdl.handle.net/2152.3/11047A memorandum regarding the space shuttle crew exercise requirementDr. William ThorntonresearchexercisetreadmillSpace MedicinememorandumNASAJoe Kerwinspace shuttle crewTreadmill_71-81_1_ExerciserRequirement_03.29.76