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People and Forests : the Forestry Interpretation Program at the Petawawa National Forestry Institute
Richard Earle Davies
出版Petawawa National Forestry Institute, Canadian Forestry Service, Agriculture Canada, 1985
ISBN06629254169780662925415
URLhttp://books.google.com.hk/books?id=0JvAAAAACAAJ&hl=&source=gbs_api