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Subject
- Botany43
- Identification6
- Plants6
- Plant communities4
- Forest plants3
- Invasive plants3
- Vegetation classification3
- Vegetation surveys2
- Afforestation1
- Agriculture1
- Alien plants1
- Angiosperms1
- Biological specimens1
- Biology1
- Biomass energy1
- Botanical specimens1
- Botany, Economic1
- Bulletin (United States. Bureau of Plant Industry)1
- Classification1
- Collection and preservation1