Meyer, Hubert E., Steve Kohler, Jerald E Dewey, and United States. Forest Service. Northern Region. State & Private Forestry. 1975. Status of the Western False Hemlock Looper Infestation In the Upper Flathead Valley, Montana, 1974. : Missoula, MT. : Forest Environmental Protection, USDA, Forest Service, Northern Region, State & Private Forestry.