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Aerial Appraisal of Damage by the Spruce Budworm

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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

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