If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email email@example.com
Author: Swingler, W. S.
Document Type: Journal Article
Affiliations: Assistant chief, Forest Service, U. S. Department of Agriculture, Washington, D. C.
Publication date: February 1, 1955