APA

McGregor, M., Bennett, D., Meyer, H., & States. Forest Service. Northern Region. State & Private Forestry, U. (1979). Evaluation of mountain pine beetle infestation, Hebgen Lake Ranger District, Gallatin National Forest, Montana, 1978. : Missoula, MT. : Forest Insect & Disease Management, USDA, Forest Service, Northern Region, State & Private Forestry.