Aerial Appraisal of Damage by the Spruce Budworm
Two methods--direct aerial observation and airphoto interpretation--have been tested and compared. Both are useful, but accuracy depends greatly on the skill and experience of the personnel used.
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Document Type: Journal Article
Affiliations: Entomologist at the Lake States Forest Experiment Station, St. Paul, Minn., Forest Service, U. S. Department of Agriculture
Publication date: 01 April 1958