| #6131 | Proceedings of the Physical Society, Section A. -- London : Physical Society, 1949-1957. -- ISSN 0370-1298 |
| #6132 | Proceedings of the Physical Society. -- London : Institute of Physics and the Physical Society, 1958-1967. -- ISSN 0370-1328 |
| #6133 | Proceedings of the Physical Society of London. -- London : Physical Society, 1874-1926. -- ISSN 1478-7814 |
| #6134 | Proceedings of the Rhodesian of Engineers. -- Velká Británie : Salisbury : Rhodesian Institution of Engineers, 1965-1967 |
| #6135 | Proceedings of the Royal Society of London, Series A, Mathematical and physical sciences. -- London : Royal Society, 1934-1990. -- ISSN 0080-4630 |
| #6136 | Proceedings of the Royal Society of London, Series B, Biological Sciences. -- London : Royal Society, 1934-1990. -- ISSN 0080-4649 |
| #6137 | Proceedings of the Royal Society of London. -- London : Royal Society, 1855-1904. -- ISSN 0370-1662 |
| #6138 | Proceedings of the Rubber technology conference / held under the auspices of the Institution of the Rubber Industry. -- Velká Británie : Cambridge : W. Heffer, 1938-1968 |
| #6139 | Proceedings of the Society for Analytical Chemistry. -- Velká Británie : London : Society for Analytical Chemistry, 1964-1971. -- ISSN 2050-828X |
| #6140 | Proceedings of the Society for Experimental Stress Analysis. -- Kanada : Cambridge, Mass. : Society for Experimental Stress Analysis, 1945-1983. -- ISSN 0096-3593 |