Subject
- Agricultural ecology -- Oregon, Western1
- Conservation tillage -- Oregon, Western1
- Ground beetles -- Effect of pesticides on-- Oregon, Western1
- Ground beetles -- Environmental enrichment -- Oregon, Western1
- Herbicides1
- Pests -- Integrated control1
- Vegetables -- Seeds1
- Weeds -- Biological control -- Oregon, Western1
- Weeds -- Cultural control -- Oregon, Western1
- Weeds -- Integrated control -- Oregon, Western1