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- Geological Survey (U.S.)2
- Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)2
- United States. Forest Service2
- BBC Audiobooks America1
- Bartos, Timothy T.1
- Bradford H. Gray Collection in the History of Social Thought (Beinecke Rare Book and Manuscript Library)1
- Carter, Janet M.1
- Davies, Erik1
- Driscoll, Daniel G.1
- Hachette Audio (Firm)1
- Hallberg, Laura L.1
- McConnohie, Michael1
- O'Harra, Cleophas C. (Cleophas Cisney), 1866-19351
- Ogle, Kathy Muller1
- Orr, Howard K.1
- Simmons, Dan, 1948-1
- South Dakota. Dept. of Environment and Natural Resources1
- South Dakota. West Dakota Water Development District1
- Van Deusen, James L.1
- Ward, Lester F. (Lester Frank), 1841-19131