Author: Batzer, Harold O.
Source: Forest Science, Volume 15, Number 1, 1 March 1969, pp. 17-25(9)
Publisher: Society of American Foresters
Document Type: Journal Article
Affiliations: Principal Insect Ecologist at the North Central Forest Expt. Sta., Forest Service, U. S. Dept. of Agric., St. Paul Minn.
Publication date: March 1, 1969