| #1421 | Progress in neurobiology. -- Oxford : Elsevier Science, 1973-. -- ISSN 0301-0082 print. -- ISSN 1873-5118 online |
| #1422 | Progress in nucleic acid research and molecular biology. -- New York : Academic Press, 1964-. -- ISSN 0079-6603 |
| #1423 | Protein expression and purification. -- San Diego : Academic Press, 1990-. -- ISSN 1046-5928 print. -- ISSN 1096-0279 online |
| #1424 | The Protein journal. -- Dordrecht : Kluwer Academic Publishers, 2004-. -- ISSN 1572-3887 print. -- ISSN 1573-4943 online |
| #1425 | Protein science. -- New York : Cold Spring Harbor Laboratory Press, 1992-. -- ISSN 0961-8368 print. -- ISSN 1469-896X online |
| #1426 | Proteins : structure, function, and genetics. -- New York : Wiley, 1986-. -- ISSN 0887-3585 |
| #1427 | Proteomics. -- Weinheim : Wiley-VCH, 2001-. -- ISSN 1615-9853 print. -- ISSN 1615-9861 online |
| #1428 | Protist. -- Jena : Elsevier, 1998-. -- ISSN 1434-4610 print. -- ISSN 1618-0941 online |
| #1429 | Protoplasma. -- Wien : Springer, 1927-. -- ISSN 0033-183X print. -- ISSN 1615-6102 online |
| #1430 | Příroda : Sborník prací z ochrany přírody. -- Praha : Agentura ochrany přírody a krajiny České republiky, 1995-. -- ISSN 1211-3603 |