1. a BC Ministry of Forests and Range , Forest Practices Branch , PO Box 9513, Stn. Prov. Govt., Victoria, BC, Canada , V8W 9C2
2. b J. Heineman Forestry Consulting , 2125 E. 5th Avenue, Vancouver, BC, Canada , V5N 1M5
3. c International Statistics and Research Corporation , PO Box 39, Brentwood Bay, BC, Canada , V8M 1R3