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Materia
- Agriculture 25
- Anthropology 2
- Archaeology 1
- Area Studies 6
- 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 5
- History 8
- History of Science 5
- History of Science: General Interest 1
- Horticulture and forestry 14