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The relationship of aspect and topographic position to the occurrence of Douglas-fir bark beetle damage in western Oregon and southwestern Washington

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The relationship of aspect and topographic position to the occurrence of Douglas-fir bark beetle damage in western Oregon and southwestern Washington

Rossheim, John David
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Name: RossheimJohnDavid1957.pdf
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URI: http://hdl.handle.net/1957/19340
Date: 1957-04-15

Description:

Graduation date: 1957
Advisor: Dilworth, J. R.
Subject: Bark beetles
Douglas fir -- Diseases and pests

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