APA

Hamel, D., McGregor, M., Oakes, R., & States. Forest Service. Northern Region. State & Private Forestry, U. (1977). Evaluation of a mountain pine beetle infestation, Jack Creek Drainage, Madison District, Beaverhead National Forest, Montana, 1976. : Missoula, MT. : Forest Insect & Disease Management, USDA, Forest Service, Northern Region, State & Private Forestry.