Microbiology on Space Station Freedom : report of a panel discussion sponsored by the Biomedical Operations and Research Branch, Medical Sciences Division, Lyndon B. Johnson Space Center, Houston, Texas, and held at the Lunar and Planetary Institute, Houston, Texas, November 6-8, 1989 / - Pierson, D. L. (National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division, 1991)