Subject
- Acalymma -- Control1
- Brassica -- Diseases and pests -- Oregon -- Willamette River Valley1
- Cabbage maggot -- Control -- Oregon -- Willamette River Valley1
- Christmas trees -- Diseases and pests -- Oregon -- Willamette River Valley1
- Corn -- Diseases and pests1
- Cucurbita -- Diseases and pests1
- Geographic information systems1
- Grain -- Diseases and pests -- Oregon1
- Grasses -- Diseases and pests -- Oregon1
- Heliothis zea1
- Hops -- Diseases and pests -- Biological control -- Northwest, Pacific1
- Hops -- Diseases and pests -- Integrated control -- Northwest, Pacific1
- Insect-plant relationships--Oregon1
- Kaolin1
- Leafhoppers -- Behavior -- Oregon1
- Leafhoppers -- Geographical distribution1
- Limnanthes--Oregon1
- Ochsenheimeria vacculella -- Oregon1
- Organic gardening1
- Phytoseiidae1