- Palladium (and hydrogen)
- 6-44
- Parks, J. M.
- 6-19
- Parr, R. G.
- 1-3 3-13 6-41 6-60 7-1 7-2 7-3 7-7 9-5
- Patel, J. C.
- 7-1
- Pauncz, R.
- 7-3
- Pearcey, T.
- 9-1
- Perring, J. K.
- 6-81
- Peyerimhoff, S. D.
- 7-4
- Philosophical Transactions of the Royal Society of London, A
- 6-39
- Photographs
- 6-18 11-2
- Physics Bulletin
- 5-3
- Physics Today
- 5-3
- Pik, A.
- 9-8
- Poirier, J. C.
- 8-2
- Polynomial computer programs
- 6-69
- Pople, J. A.
- 3-1
- Powell, ?.
- 3-5 3-6
- Price, J. R.
- 8-18 9-7
- Princeton University
- 6-41
- Proceedings of the Cambridge Philosophical Society
- 6-1
- Proceedings of the Physical Society, A
- 6-4 6-5 6-6 6-8 6-9
- Proceedings of the Royal Society, A
- 6-2 6-3 6-10 6-12 6-23 6-42
- Pullman, B.
- 6-37
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