-
By: Worthington, David J. - Ross, H. Nelson. - Custer National Forest (Agency : U.S.) - Montana Natural Heritage Program. - Montana Nature Conservancy. - United States. Bureau of Land Management. Billings Resource Area. - University of Montana--Missoula. Division of Biological Sciences.Edition:Publication info: Helena, Mont, Montana Natural Heritage Program, [1990]Volume: 1990Series:Holding Institution: Montana State LibrarySubjects:BHL Collections: