Subject
- Wood -- Preservation5
- Wood preservatives4
- Fungicides3
- Douglas fir1
- Forests and forestry1
- Forests and forestry -- Oregon1
- Wood -- Deterioration1
- Wood -- Evaluation1
- Wood -- Northwest, Pacific -- Preservation1
- Wood -- Preservation -- Testing1
- Wood poles1
- Wood poles -- Deterioration1
- Wood poles -- Inspection1
- Wood poles -- Maintenance and repair1
- Wooden fences1