Subject
- Wood waste3
- Engineering2
- Sawmills -- Waste disposal2
- Air -- Pollution1
- Air -- Pollution -- Northwest, Pacific1
- Factory and trade waste -- Oregon1
- Furnaces -- Evaluation1
- Heating1
- Incinerators1
- Incinerators -- Design and construction1
- Incinerators -- Environmental aspects1
- Oregon -- Sanitary affairs1
- Refuse and refuse disposal -- Oregon1
- Water -- Pollution -- Oregon -- Willamette River Watershed1
- Wood waste -- Waste disposal1
- Wood-pulp industry -- Waste disposal1