| #5541 | Peloton. -- Praha : Prolog, 1991-. -- ISSN 1210-129X |
| #5542 | Performance measurement and metrics. -- Bingley : Emerald, 2000-. -- ISSN 1467-8047 print. -- ISSN 1758-6925 online |
| #5543 | Perfumery and Essential Oil Record. -- London : United Trade Press, 1910-1969. -- ISSN 0369-8998 |
| #5544 | Periodica polytechnica, Chemical engineering. -- Budapest : Technical University, 1957-. -- ISSN 0324-5853 |
| #5545 | Periodica polytechnica, Electrical engineering. -- Budapest : Technical University, 1957-. -- ISSN 0324-6000 |
| #5546 | Periodica polytechnica, Mechanical engineering. -- Budapest : Technical University, 1969-. -- ISSN 0324-6051 |
| #5547 | Personal : Mensch und Arbeit im Betrieb. -- Köln : Wirtschaftsverlag Bachem, 1968-. -- ISSN 0031-5605 |
| #5548 | Personal computer world. -- London : Intra, 1978-. -- ISSN 0142-0232 |
| #5549 | Personal engineering & instrumentation news. -- Boston : Personal Engineering Communications, 1984-1998. -- ISSN 0748-0016 |
| #5550 | Perspektiven (Wien). -- Wien : Compress Verlags, 1988-. -- ISSN 1560-8506 |