2018-12-182018-12-18Unknownhttps://hdl.handle.net/2152.3/10974handwritten notes for the crew members of SL-4SkylabSL-4Dr. William ThorntonSpace MedicineresearchLBNPLower Body Negative Pressurehandwritten notesLBNP_LegVolumeChanges_SL4_FlightDirectorMissionLog_handwritten_2