APA

Hamel, D., McGregor, M., Oakes, R., & States. Forest Service. Northern Region. State & Private Forestry, U. (1977). Harvesting strategies for management of mountain pine beetle infestations in lodgepole pine, Gallatin National Forest, Montana : progress report, 1976. : Missoula, MT. : Forest Insect & Disease Management, USDA, Forest Service, Northern Region, State & Private Forestry.