GREENLEAF, J. E.; VAN KESSEL, A. L.; RUFF, W.; CARD, D. H.; RAPPORT, M.
1A. L. van Kessel, Stanford University School of Medicine, Stanford, California.
2W. Ruff, Stanford University Department of Physical Education, Stanford, California.
Laboratory of Human Environmental Physiology, NASA-Ames Research Center, Moffet Field, California 94035