- Poland2
- Printing2
- Psychology2
- Pythagoras and Pythagorean school2
- Recipes2
- Regula (Benedict, Saint, Abbot of Monte Cassino)2
- Religious life2
- Requesens, Antonio de'2
- Requesens, Bernardo de'2
- Rhetoric--Study and teaching2
- Rhetorica ad Herennium2
- Roman law2
- Romania--Transylvania2
- Rossi, Girolamo de'2
- Salt industry and trade--Law and legislation2
- San Marziano (Monastery : Tortona, Italy)2
- San Miniato, Cosimo di2
- San Miniato, Giovanni di2
- San Miniato, Jacopo di2
- San Miniato, Michele di2