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Fifteen-year Growth of Tamarack Planted at Six Spacings on an Upland Site
W. M. StiellPetawawa National Forestry Institute
出版Petawawa National Forestry Institute, Canadian Forestry Service, 1986
ISBN06621481189780662148111
URLhttp://books.google.com.hk/books?id=mfrRf8wMQBgC&hl=&source=gbs_api