Subject
- Agricultural pests -- Control -- Congresses57
- Apples -- Diseases and pests26
- Pears -- Diseases and pests22
- Codling moth -- Control9
- Pear psylla -- Control6
- Apple pandemis -- Control5
- Codling moth3
- Apple aphid2
- Spirea aphid2
- Two-spotted spider mite2
- European red mite -- Control1
- Two-spotted spider mite -- Control1
- Yponomeuta -- Control1