Subject
- City planning -- Oregon -- Portland -- Decision making1
- Copper mines and mining -- Arizona -- Cost of operation1
- Copper mines and mining -- Environmental aspects -- Arizona1
- Copper mines and mining -- Waste disposal -- Arizona -- Costs1
- Electromagnetic induction1
- Energy conservation -- Oregon -- Portland -- Case studies1
- Geographic information systems -- Oregon -- Portland1
- Lakes -- Oregon1
- Land use -- Environmental aspects -- Oregon1
- Land use, Urban -- Oregon -- Portland -- Decision making1
- Neighborhood planning -- Oregon -- Portland1
- Nutrient pollution of water -- Oregon1
- Petroleum industry and trade -- Environmental aspects -- North Dakota -- Bottineau County1
- Soils, Salts in -- North Dakota -- Bottineau County1
- Sour brine -- Environmental aspects -- North Dakota -- Bottineau County1
- Sustainable urban development -- Oregon -- Portland -- Decision making1
- Water -- Nitrogen content -- Oregon1
- Water -- Phosphorus content -- Oregon1
- Water conservation -- Oregon -- Portland -- Case studies1
- Water heaters -- Energy consumption -- Oregon -- Portland -- Case studies1