MLA

James, Robert L, United States. Forest Health Protection, and United States. Forest Service. Northern Region. Effects of Topical Application of the Biological Control Agent Biotrek On Production of Bareroot Douglas-fir and Western White Pine Seedlings, Usda Forest Service Nursery, Coeur D'alene, Idaho. : Missoula, MT : U.S. Dept. of Agriculture, Forest Service, Northern Region, 2000.