Author: Hirt, Ray R.
Source: Journal of Forestry, Volume 38, Number 12, 1 December 1940, pp. 932-937(6)
Publisher: Society of American Foresters
Document Type: Journal Article
Affiliations: Agent in the Bureau of Plant Industry, U. S. Department of Agriculture, in cooperation with the New York State College of Forestry, Syracuse, N. Y.
Publication date: December 1, 1940