Cook, Philip S., 1960- author.
Fort Collins, Colorado : U.S. Department of the Interior, National Park Service, Natural Resource Stewardship and Science, 2013.
2013
Young, Craig C., author.
Fort Collins, CO : National Park Service, U.S. Department of the Interior : Natural Resource Stewardship and Science, 2012.
2012
Diamond, David Daniel, 1956- author.
Fort Collins, Colorado : U.S. Department of the Interior, National Park Service, Natural Resource Stewardship and Science, 2014.
2014