| Author | Titles | 1.
| Paret y Alcazar, Luis, 1746-1799 | 1 | 2.
| Pareto, Vilfredo | 1 | 3.
| Pareyson, Luigi, 1918-1991 | 1 | 4.
| Parfait, A. | 1 | 5.
| Parfait, Françoise | 1 | 6.
| Parfenov, Michel | 1 | 7.
| Parga Iglesias, Luis Vásquez de | 1 | 8.
| Parga, Jorge | 2 | 9.
| Parga, Luis | 1 | 10.
| Parga Suárez, Luis | 1 |
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