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entomology. (7) |
Insect pests - Biological control. (7) |
Major entomology. (7) |
Competition (Biology) (2) |
Boll weevil - Biological control. (1) |
Boll weevil. (1) |
Borers (Insects) - Parasites. (1) |
Braconidae. (1) |
Horn fly. (1) |
Host-parasite relationships. (1) |