| #621 | Proceedings of the Edinburgh Mathematical Society. -- Edinburgh : The Edinburgh Mathematical Society, 1883-. -- ISSN 0013-0915 print. -- ISSN 1464-3839 online |
| #622 | Proceedings of the Egyptian Academy of Sciences. -- Cairo : Egyptian Academy of Science, 1945-. -- ISSN 0369-8874 |
| #623 | Proceedings of the Estonian Academy of Sciences : Physics. Mathematics. -- Tallin : Estonian academy publishers, 1990-2007. -- ISSN 1406-0086 |
| #624 | Proceedings of the Iowa Academy of Science. -- Des moines : Iowa Academy of Science, 1889-1987. -- ISSN 0085-2236 |
| #625 | Proceedings of the Jangjeon Mathematical Society. -- Daegu : Jangjeon Research Institute for Mathematical Sciences and Physics, 2000-. -- ISSN 1598-7264 |
| #626 | Proceedings of the Japan Academy. -- Tokyo : Nippon Gakushiin, 1945-1977. -- ISSN 0021-4280 |
| #627 | Proceedings of the Japan Academy, Series A Mathematical sciences. -- Tokyo : Japan Academy, 1977-. -- ISSN 0386-2194 |
| #628 | Proceedings of the Koninklijke Nederlandse Academie van Wetenschappen, Series A. Mathematical sciences. -- Amsterdam : North-Holland, 1951-1989. -- ISSN 0023-3358 |
| #629 | Proceedings of the London Mathematical Society. -- London : London Mathematical Society, 1865-. -- ISSN 0024-6115 print. -- ISSN 1460-244X online |
| #630 | Proceedings of the National Academy of Sciences of the United States of America. -- Washington : National Academy of Sciences, 1914-. -- ISSN 0027-8424 print. -- ISSN 1091-6490 online |