Authors: Helgerson, Ole T.; Tesch, Steven D.; Hobbs, Stephen D.; McNabb, D. H.
Source: Western Journal of Applied Forestry, Volume 4, Number 4, 1 October 1989, pp. 124-128(5)
Publisher: Society of American Foresters
Document Type: Journal Article
Affiliations: Department of Forest Engineering, College of Forestry, Oregon State University, Corvallis 97331
Publication date: October 1, 1989