- Philip III, King of Spain, 1578-16211
- Philip IV, King of Spain, 1605-16651
- Philipp I, Landgraf von Hessen, 1504-15671
- Philippines2
- Philippines--Manila1
- Philosophy5
- Philosophy and religion1
- Philosophy, Ancient2
- Philosophy, Ancient--Study and teaching1
- Philosophy, Indic3
- Philosophy--Manuscripts1
- Philosophy--Study and teaching1
- Physical sciences2
- Physics7
- Physics (Aristotle)8
- Physics--Philosophy1
- Physiognomy1
- Piccolomini della Triana, Silvio, 1878-19623
- Piccolomini family1
- Piccolomini, Alessandro1