| Author | Titles | | 1.
| Porter, Vicki | 1 | | 2.
| Portera Sánchez, Alberto | 1 | | 3.
| Porterfield, Todd | 1 | | 4.
| Portes, Florence | 1 | | 5.
| Portet, Patrick J-M | 1 | | 6.
| Portevin, Catherine | 1 | | 7.
| Porthas, pseud. | 0 | | 8.
| Author is: Arroio, António, 1856-1934 | 27 | | 9.
| Pórtico ( Lisboa, Portugal ) | 0 | | 10.
| Author is: Galeria Pórtico (Lisboa, Portugal) | 47 | | 11.
| Portier, Felice | 1 | | 12.
| Portigliotti, Giuseppe | 1 |
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