Yellowstone National Park Report
A 3-year study of the wetland plant communities of the northern range of Yellowstone National Park was initiated in May, 1985. This report covers activities during calendar year 1987.
Pfister, Robert D.; Hansen, Paul L.; and Chadde, Steve W.
"Wetland Vegetation of the Northern Range, Yellowstone National Park: Classification, Succession, and Environmental Relationships,"
University of Wyoming National Park Service Research Center Annual Report: Vol. 11
, Article 28.
Available at: http://repository.uwyo.edu/uwnpsrc_reports/vol11/iss1/28