| #6201 | Proceedings of the Institution of Radio and Electronics Engineers Australia. -- Australie : Sydney : Institution of Radio Engineers Australia, 1937-1963. -- ISSN 0020-3521 |
| #6202 | Proceedings of the Institution of Radio Engineers Australia. -- Australie : Sydney : Institution of Radio Engineers Australia, 1937-1963. -- ISSN 0314-4305 |
| #6203 | Proceedings of the Institution of Rubber Industry. -- Velká Británie : London : Institution of Rubber Industry, 1954-1966. -- ISSN 0534-2880 |
| #6204 | Proceedings of the International Commission on Glass. -- Velká Británie : London : Isaac Pitman / London : Butterworths Scientific Publications, 1954-1957, 1957. -- ISSN 0534-8269 |
| #6205 | Proceedings of the Iowa Academy of Science. -- Des moines : Iowa Academy of Science, 1889-1987. -- ISSN 0085-2236 |
| #6206 | Proceedings of the IRE. -- New York : Institute of Radio Engineers, 1939-1962. -- ISSN 0096-8390 |
| #6207 | Proceedings of the IREE Australia. -- Australie : Sydney : Institution of Radio and Electronics Engineers Australia, 1979-1980 |
| #6208 | Proceedings of the Japan Academy, Series A Mathematical sciences. -- Tokyo : Japan Academy, 1977-. -- ISSN 0386-2194 |
| #6209 | Proceedings of the Japan Academy, Series B, Physical and biological sciences. -- Tokyo : Japan Academy, 1977-. -- ISSN 0386-2208 |
| #6210 | Proceedings of the London Mathematical Society. -- London : London Mathematical Society, 1865-. -- ISSN 0024-6115 print. -- ISSN 1460-244X online |