Subject
- Agricultural pests -- Control -- Congresses8
- Oulema melanopa -- Control6
- Cereal leaf beetle -- Control3
- Biological pest control agents2
- Oulema melanopa -- Geographical distribution2
- Oulema melanopa -- Phenology2
- Grasses -- Diseases and pests1
- Insect population density1
- Oregon1
- Oulema melanopa1
- Oulema melanopa -- Biological control1
- Oulema melanopa -- Idaho1
- Oulema melanopa -- Oregon1