https://catalogue-scientifique.canada.ca/record=3347713~S6*frc
Rechercher International Union of Forestry Research Organizations (IUFRO); Rechercher International Union of Forest Research Organizations Working Party on World Directory of Tree Physiology Workers; Rechercher International Union of Forest Research Organizations Division 2--Forest Plants and Forest Protection; Rechercher Horsley, Stephen B
USDA Forest Service, Northeastern Forest Experiment Station, 1989
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