1. Natural Resources Canada; Canadian Forest Service; Laurentian Forestry Centre; 1055 du P.E.P.S P.O. Box 10380 Stn. Sainte-Foy Quebec QC G1V 4C7 Canada
2. Natural Resources Canada; Canadian Forest Service; Northern Forestry Centre; 5320 122nd Street Edmonton AB T6H 3S5 Canada
3. Natural Resources Canada; Canadian Forest Service; Pacific Forestry Centre; 506 Burnside Road West Victoria BC V8Z 1M5 Canada