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Proceedings of the Twenty-first Meeting of the Canadian Tree Improvement Association Held in Truro, N.S., Aug. 17-21, 1987
Canadian Tree Improvement Association. Meeting
出版Canadian Forestry Service, for the Canadian Tree Improvement Association, 1988
ISBN06621608199780662160816
URLhttp://books.google.com.hk/books?id=oTXzwgEACAAJ&hl=&source=gbs_api