1956. Northwest Forest Pest Action Council meeting. Portland, Oregon.

by USDA Forest Service

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Axe, bakerdistrict, defoliation

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Aerialsurvey, components, dasm

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U.S. General Land Office S.S. Burdett Roeser, C. · 1213×1536

David, rumsey, historical

U.S. General Land Office S.S. Burdett Roeser, C. · 1536×1220

David, rumsey, historical

U.S. General Land Office S.S. Burdett Roeser, C. · 1536×1223

David, rumsey, historical

U.S. General Land Office S.S. Burdett Roeser, C. · 1218×1536

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U.S. General Land Office Roeser, C. · 1211×1536