- Corpus juris civilis1
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- Cosimo II, Grand Duke of Tuscany, 1590-16211
- Cosimo III, Grand-Duke of Tuscany, 1642-17231
- Cosmology, Ancient1
- Costapellegrina, Giovan Andrea1
- Cottricciaio, Mariotto1
- Council of Pisa--(2nd : 1511-1512)1
- Council of Vienne1
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