"Spring 1992."
The funding for this research was provided by the National Park Service through Interagency Agreement # 0475-4-8003.
The funding for this research was provided by the National Park Service through interagency agreement with the National Oceanic and Atmospheric Administration through Agreement # CM0200-DOC-NOAA.
The funding for this research was provided by the National Park Service through interagency agreement with the National Oceanic and Atmospheric Administration through Agreement to the Cooperative Institute for Research in the Atmosphere, Project 5-31253.
Includes bibliographical references (p. 140-154).