| #1511 | Proceedings of the Chemical Society. -- London : The chemical society, 1957-1964. -- ISSN 0369-8718 |
| #1512 | Proceedings of the Indian Academy of Sciences. Chemical sciences. -- Bangalore : Indian Academy of Sciences, 1980-2003. -- ISSN 0253-4134 print. -- ISSN 0973-7103 online |
| #1513 | Proceedings of the Royal Irish Academy, Section B, Biological, geological, and chemical science. -- Dublin : Royal Irish Academy, 1902-1992. -- ISSN 0035-8983 |
| #1514 | Proceedings of the Society for Analytical Chemistry. -- Velká Británie : London : Society for Analytical Chemistry, 1964-1971. -- ISSN 2050-828X |
| #1515 | Proceedings of the Symposium on Combustion. -- Pittsburgh : Combustion Institute, 1928-1937. -- ISSN 1062-2888 print. -- ISSN 1876-438X online |
| #1516 | Process. -- Würzburg : Vogel Industrie Medien, 1994-. -- ISSN 0946-2856 |
| #1517 | Process biochemistry. -- Barking : Elsevier, 1991-. -- ISSN 1359-5113 |
| #1518 | Process biochemistry. -- Watford : Elsevier, 1966-1990. -- ISSN 0032-9592 |
| #1519 | Process industries Canada magazine. -- Kanada : Unionville : Zanny Ltd., 1991-1992. -- ISSN 1189-3753 |
| #1520 | Process safety and environmental protection. -- Rugby : The Institution of Chemical Engineers, 1990-. -- ISSN 0957-5820 print. -- ISSN 1744-3598 online |