Materia
- Economic Development and Growth 6
- Engineering 6
- Law 6
- Philosophy 6
- American Studies 5
- Archaeology of The Americas 5
- Economics 5
- Historical Geography 5
- Archaeology 4
- Politics: General Interest 4
- Religion 4
- Buddhism and Eastern Religions 3
- Classical Studies 3
- Mathematics 3
- Middle East History 3
- Physics And Astronomy 3
- Regional and World History: General Interest 3
- Sociology 3
- South-East Asian History 3
- Church History 2