Author: Hirt, Ray R.
Source: Journal of Forestry, Volume 34, Number 5, 1 May 1936, pp. 506-511(6)
Publisher: Society of American Foresters
Document Type: Journal Article
Affiliations: As agent in the Division of Plant Disease Control, Bureau of Entomology and Plant Quarantine, in cooperation with the New York State College of Forestry, Syracuse, N. Y.
Publication date: May 1, 1936