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Materia
- Physics And Astronomy 93
- Engineering 19
- Mathematics 16
- European Studies 6
- History 6
- British History: General Interest 5
- European History after 1450 5
- Social and Population History 5
- Earth and Environmental Sciences 4
- Ecology and Conservation 4
- General Science 4
- History of Ideas and Intellectual History 4
- Church History 3
- Classical Studies (General) 3
- Condensed Matter Physics 3
- Economics 3
- English Literature 1700-1830 3
- English Literature: General Interest 3
- Middle East Studies 3
- Nanoscience and Mesoscopic Physics 3