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Authors: Silen, Roy R.; Wheat, Joseph G.
Source: Journal of Forestry, Volume 77, Number 2, 1 February 1979, pp. 78-83(6)
Publisher: Society of American Foresters
Document Type: Journal Article
Affiliations: Director, Tree Improvement Laboratory, Industrial Forestry Association, Olympia, Washington
Publication date: February 1, 1979