Griffin, Paul C., author.
Fort Collins, Colorado : U.S. Department of the Interior, National Park Service, Natural Resource Stewardship and Science, 2012.
2012
Sullivan, Timothy J. (Timothy Joseph), 1950- author.
Denver, Colorado : U.S. Department of the Interior, National Park Service, Natural Resource Program Center, 2011.
2011
Jenkins, Kurt Jeffrey.
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey ; [Port Angeles, WA : USGS Forest and Rangleland Ecosystem Science Center, Olympic Field Station, 2003]
2003