by United States. Forest Service. Northern Region. State & Private Forestry
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Aerial spray evaluation pine butterfly t...
The pine engraver beetle
Operational plan
Soil disturbance-tree growth relations i...
Twenty-year growth of ponderosa pine sap...
Twenty-year growth of thinned and unthin...
Ten-year performance of ponderosa pine p...
Arizona five-spined ips
Western pine-shoot borer