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Title: Visual aids for aerial observers on forest insect surveys.
Author: Larsen, A.T.;
Source: PNW Old Series Research Notes No. 149, p. 1-4
Publication Series: Miscellaneous Publication
Description: Aerial surveys are widely used to detect, appraise, and map damage caused to forest trees by insects. The success of these surveys largely depends upon the ability of observers to distinguish differences in foliage color and tree condition. The observers' ability is influenced by several factors.
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Larsen, A.T. 1957. Visual aids for aerial observers on forest insect surveys. PNW Old Series Research Notes No. 149, p. 1-4
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