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Materia
- Area Studies 22
- Atmospheric Science and Meteorology 22
- History 15
- Climatology and Climate Change 5
- Politics and International Relations 4
- Anthropology 3
- Astrophysics 3
- Literature 3
- Archaeology 2
- Classical Studies 2
- Earth and Environmental Science: General Interest 2
- Geography 2
- Religion 2
- Circuits and Systems 1
- Cosmology 1
- Engineering: General Interest 1
- Fluid Dynamics and Solid Mechanics 1
- Geomorphology and Physical Geography 1
- History of Science 1
- Hydrology 1