APA

Gibson, K., States. Forest Service. Northern Region. Forest Insect and Disease Management, U., & States. Forest Service. Northern Region. State & Private Forestry, U. (1979). Mountain pine beetle infestation potential for the Plains Ranger District, Lolo National Forest. : Missoula, MT. : Forest Insect & Disease Management, USDA, Forest Service, Northern Region, State & Private Forestry.