1. British Columbia Ministry of Environment, P.O. Box 9536 Stn. Prov. Govt., Victoria, British Columbia V8W 9C4
2. Ontario Ministry of Natural Resources, Centre for Northern Forest Ecosystem Research, c/o Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1
3. Faculty of Forestry, University of Toronto, 33 Willcocks St., Toronto, Ontario M5S 3B3