| #1101 | Pro sound news. -- London : Pro Sound News Publications, Spotlight Publications Limited, 1986-. -- ISSN 0269-4735 |
| #1102 | Probabilistic engineering mechanics. -- Barking : Computational Mechanics Publication, 1985-. -- ISSN 0266-8920 print. -- ISSN 1878-4275 online |
| #1103 | Problemy difrakcii rasprostranenija voln. -- Leningrad : Izdatel´stvo Leningradskogo universiteta, 1962-. -- ISSN 0202-2354 |
| #1104 | Problemy fiziki atmosfery. -- Leningrad : Izdatel´stvo Leningradskogo universiteta, 1963-. -- ISSN 0552-2056 |
| #1105 | Problemy matematičeskoj fiziki. -- Leningrad : Izdatelʹstvo Leningradskogo universiteta. -- ISSN 0555-2818 |
| #1106 | Proceedings. -- London : Royal Society, 1990-1996. -- ISSN 0962-8444 |
| #1107 | Proceedings of the Indian Academy of Sciences. Section A, Physical Sciences. -- Indie : Bangalore : Indian Academy of Sciences, 1934-1979. -- ISSN 0370-0089 |
| #1108 | Proceedings of the Indian National Scientific Academy, Pt. A. Physical sciences. -- New Delhi : Indian National Sceince Academy, 1970-. -- ISSN 0370-0046 |
| #1109 | Proceedings of the Institution of Electrical Engineers, Part C, Monographs. -- London : Institution of Electrical Engineers, 1955-1962. -- ISSN 0369-8904 print. -- ISSN 2054-0426 online |
| #1110 | Proceedings of the Institution of Electrical Engineers. Part 1, General. -- Velká Británie : London : Institution of Electrical Engineers, 1949-1954. -- ISSN 0369-8920 |