2018-04-182018-04-181974-04-23http://hdl.handle.net/2152.3/8161Graphs of biomedical data for Skylab crew members labeled Skylab Crew Health Trend-Hemoglobin Pre & Postflight Lab Analysis dated Apr 23, 1974.Skylab 4Skylab 3Skylab 2Crew Health TrendHemoglobin Pre & Postflight Lab AnalysisDr. Charles BerrySpace Medicinebiomedical data