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- Bees 62
- Larvae 11
- Universities and colleges--Faculty 6
- Habitat (Ecology) 5
- Bee culture--Equipment and supplies 4
- Beehives 4
- Entomology 4
- Alfalfa 3
- Nests 3
- Rhododendrons 3
- Apples 2
- Croplands 2
- Entomology 2
- Experiments 2
- Insects--Larvae 2
- Stephen, William P. 2
- Balsams 1
- Dahlias 1
- Economic impact analysis 1
- Foote, Wilson H. 1