sponsored by Vermont Department of Forests, Parks and Recreation, USDA Forest Service, State and Private Forestry, CANADA/United States Spruce Budworms R&D Program ; [prepared by United States Department of Agriculture, Forest Service, Northeastern Station]
International Union of Forestry Research Organizations. Subject Group S6.06, Management of Forestry Research. Meeting (1989 : Farnham, Surrey, England)
technical coordinators, William E. Wallner and Katherine A. McManus ; sponsored jointly by the Northeastern Forest Experiment Station and the International Union of Forest Research Organizations