Subject
- Agricultural pests -- Control -- Congresses9
- Thrips -- Control5
- Onion thrips -- Control3
- Pear thrips -- Control -- Oregon3
- Prune -- Diseases and pests -- Control -- Oregon3
- Insecticides -- Research2
- Onions -- Diseases and pests2
- Apples -- Diseases and pests1
- Gladiolus -- Diseases and pests -- Control1
- Greenhouse thrips -- Control1
- Pear -- Diseases and pests -- Control -- Oregon1
- Pear thrips -- Control1
- Thrips -- Control -- Oregon -- Hood River Valley1
- Thrips -- Geographical distribution1