title: GASEOUS ENVIRONMENT CONSIDERATIONS AND EVALUATION PROGRAMS LEADING TO SPACECRAFT ATMOSPHERE SELECTION. NASA TN D-2506.
mesh_terms: D001272:Atmosphere; D001419:Bacteria; D003665:Decompression Sickness; D018504:Ecological Systems, Closed; D004777:Environment; D008660:Metabolism; D010100:Oxygen; D011581:Psychological Tests; D012129:Respiratory Function Tests; D013026:Space Flight; D018531:Spacecraft; D014481:United States; D018557:United States National Aeronautics and Space Administration; D014867:Water
chemical_list: D014867:Water; D010100:Oxygen
keywords: BACTERIA; DECOMPRESSION SICKNESS; METABOLISM; OXYGEN; PSYCHOLOGICAL TESTS; RESPIRATORY FUNCTION TESTS; SEALED CABIN ECOLOGY; SPACE FLIGHT; WATER