References

Brockman, C.F. 1968 A Guide to Field Identification: Trees of North America. Golden Press, New York

Cellier, G.A.,Attinson, W.A. 1987 The Feasibility of Hybrid Poplar in the Pacific Northwest. College of Forest Resources, University of Washington

Dawson, J.O., Hansen, E.A. 1983 Effect of Alnus glutinosa on Hybrid Populus Growth and Soil Nitrogen Concentration in a Mixed Plantation. USDA Forest Service North-Central Forest Experiment Station

Hansen, E.A. 1983 Establishing Intensively Cultured Hybrid Poplar. USDA Forest Service North-Central Forest Experiment Station

Hansen, E.A. 1983 Intensive Plantation Culture: Twelve Years Research. USDA Forest Service North-Central Forest Experiment Station

Hansen, E.A., Baker, J.B 1979 Biomass and Nutrient Removal in Short Rotation Intensively Cultured Plantations. Symposium on the Impact of Intensive Harvesting on Forest Nutrient Cycling

Heilman, P.E., Stettler, R.F., Hanley, D.P., Carkner, R.W. 1990 High Yield Hybrid Poplar Plantations in the Pacific Northwest. Extension Publication PNW 356, Washington State University, Cooperative Extension, Pacific Northwest

Heilman, P.E., Xie, F.G. 1993 Influence of Nitrogen on Growth and Productivity of Short Rotation Populus trichocarpa x Populus deltoides Hybrids. Canadian Journal of Forest Research, v. 23, Sept. 1993

Jobling, J. 1990 Poplars for Wood and Amenity. Forestry Commission, Forest Research Station, Alice Holt Lodge, Wrecclesham, Farnham, Surrey

Kimmins, Hamish. 1992 Balancing Act: Environmental Issues in Forestry. University of British Columbia Press, Vancouver, BC

Lame Deer, John (Fire). 1972 Lame Deer, Seeker of Visions. Simon and Schuster, New York, NY

Norse, Elliott. 1990 Ancient Forests of the Pacific Northwest. The Wilderness Society, Seattle, WA

Pojar, J., MacKinnon, A. 1994 Hansen, E.A. 1983 Plants of the Pacific Northwest Coast. Lone Pine Publishing, Redmond, WA

Phelps, John. 1983 Biomass from Intensively Cultured Plantations as an Energy, Chemical, and Nutritional Feedstock. USDA Forest Service North-Central Forest Experiment Station

Von Althen, F.W. 1981 Site Preparation and Post-planting Weed Control in Hardwood Afforestation: White Ash, Black Walnut, Basswood, Silver Maple, Hybrid Poplar.Report 0-X-325; Great Lakes Forest Research Center, Sault Ste. Marie, Ontario

Whitman, Ann (editor). 1986 Familiar Trees of North America. Audubon Society, Alfred A. Knopf, New York, NY

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