Author: Heede, B. H.
Source: Forest Science, Volume 6, Number 1, 1 March 1960, pp. 17-18(2)
Publisher: Society of American Foresters
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Document Type: Review Article
Rocky Mountain Forest and Range Expt. Sta., Forest Service, U. S. Dept. Agric. Fort Collins, Colorado
Publication date: March 1, 1960