Subject
- Agricultural pests -- Control -- Congresses22
- Oulema melanopa -- Control3
- Biological pest control agents2
- Cereal leaf beetle -- Control2
- Oulema melanopa -- Geographical distribution2
- Oulema melanopa -- Phenology2
- Carbaryl1
- Oregon1
- Oulema melanopa -- Oregon1
- Trichlorfon1
- Western spruce budworm -- Montana -- Beaverhead National Forest1