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 firstname.lastname@example.org
Author: Van Dersal, William R.
Document Type: Journal Article
Affiliations: Regional Chief of Operations, Pacific Region, Soil Conservation Service, Portland, Ore.
Publication date: April 1, 1948