Author: Echols, R. M.
Source: Journal of Forestry, Volume 67, Number 2, 1 February 1969, pp. 123-125(3)
Publisher: Society of American Foresters
Document Type: Journal Article
Affiliations: Research Forester at the Pacific Southwest Forest and Range Expt. Sta., Forest Service, U.S. Dept. Agric., Berkeley, Calif.
Publication date: February 1, 1969