| Author | Titles | | 1.
| Piedrafita, Santiago | 3 | | 2.
| Piekarek, Udo | 1 | | 3.
| Piel, Denis, 1944- | 1 | | 4.
| Piel, Friedrich | 1 | | 5.
| Piel, Jean | 2 | | 6.
| Piel, Joseph Maria, 1903-1992 | 35 | | 7.
| Piel-Desruisseaux, J. | 1 | | 8.
| Pieler, Hans, 1951- | 1 | | 9.
| Piemmettawat, Paisarn | 1 | | 10.
| Piemontese, Angelo M. | 1 |
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