Names
- Parker, J. W.1
- Parsons, Carey Evlya1
- Parsons, W. S.1
- Paschen, F.1
- Pasvolsky, Leo1
- Pauli, Wolfgang, 1900-1958.1
- Peckham, Donald C.1
- Peet, Bert W.1
- Peet, Max M1
- Pendill, Claudius G.1
- Penney, William George, 1909-1
- Penney, William George, Sir, 1909-1
- Pergamon Institute1
- Perkins, John A.1
- Phelps, Fred1
- Phinney, Elizabeth1
- Phoenix Memorial Laboratory.1
- Platt, John1
- Prentice Hall Inc.1
- Price, Derek J. de Solla (Derek John de Solla), 1922-1983.1