| Author | Titles | | 1.
| Planès, Marielle | 1 | | 2.
| Planet, François | 2 | | 3.
| Planeta Tangerina (Firma) | 2 | | 4.
| Plang, Guntram | 1 | | 5.
| Planiscig, Leo, 1887-1952 | 9 | | 6.
| Plank, William | 1 | | 7.
| Plankensteiner, Barbara | 1 | | 8.
| PLANO 21. Associação Cultural (Lisboa, Portugal) | 2 | | 9.
| Related author: Mendes, Paulo, 1966- | 31 | | 10.
| Related author: Jürgens, Sandra Vieira, 1969- | 255 | | 11.
| Related author: Moreira, Inês, 1977- | 17 | | 12.
| Plano B Arquitectura (Firma de arquitectura) | 3 | | 13.
| Plano B (Firma de Arquitectura) | 0 |
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