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Materia
- Agriculture 25
- Archaeology 1
- Area Studies 3
- Art 1
- Botanical Reference 5
- Climatology and Climate Change 1
- Computer Science 1
- Ecology and Conservation 2
- Economics 2
- Engineering 1
- Entomology 1
- Environmental Law 1
- Environmental Science 1
- European History after 1450 1
- Geography 3
- History 6
- History of Science 4
- History of Science: General Interest 1
- Horticulture and forestry 14
- Law 6