| Phillips, John |
| Phillips, Peter |
| Phillips, Roger & Rix, Martyn (Assisted By Alison Rix) |
| Phillips, Roger & Rix, Martyn (Brian Mathew ed) |
| Phillips, Roger & Rix, Martyn Assisted By Alison Rix) |
| Phillips, Zoe with Natalee Ward |
| Philpott, A.R. |
| Phipps, Catherine |
| Picard, Barbara Leonie |
| Picasso, Pablo (Dore Ashton compiler) |
| Pickup, G. (ed) |
| Pielou, E.C. |
| Pierce, Peter with Rhett Kirkwood |
| Piercy, Marge |
| Pimentel, David; Westra, Laura and Noss, Reed F. (eds) |
| Pinchiorri, Giorgio and Féolde, Annie |
| Pinder, Wilhelm |
| Pinheiro, Jose C and Douglas M. Bates |
| Piras,Claudia e Eugenio Medagliani |
| Pirie, Gordon |
| Pittenger, W. Norman |
| Pittock, A Barrie |
| Pittock, Barrie (ed) |
| Pius IX |
