| #601 | Periodica polytechnica, Electrical engineering. -- Budapest : Technical University, 1957-. -- ISSN 0324-6000 |
| #602 | Philosophical magazine. -- London : Taylor and Francis, 1798-1977. -- ISSN 0031-8086 |
| #603 | Philosophical Transactions of the Royal Society of London, Series A: Mathematical and Physical Sciences. -- London : Royal Society, 1933-. -- ISSN 0080-4614 |
| #604 | Physica. -- Amsterdam : North-Holland, 1934-1974. -- ISSN 0031-8914 print. -- ISSN 1873-1767 online |
| #605 | Physics abstracts. -- London : The Institution of Electrical Engineers, 1941-. -- ISSN 0036-8091 |
| #606 | Pliska : studia mathematica Bulgarica. -- Sofiâ : Bulgarska akademiâ na naukite, 1977-. -- ISSN 0204-9805 |
| #607 | Podstawy Sterowania. -- Warszawa : Panstwowe Wydawnictwo Naukowe, 1971-1988. -- ISSN 0374-4094 |
| #608 | Pokroky matematiky, fyziky a astronomie. -- Praha : Jednota českých matematiků a fyziků, 1956-. -- ISSN 0032-2423 |
| #609 | Population studies. -- London : Population Investigation Committee, London School of Economics, 1947-. -- ISSN 0032-4728 print. -- ISSN 1477-4747 online |
| #610 | Portugaliae mathematica. -- Lisboa : Sociedade Portuguesa de Matematica, 1937-. -- ISSN 0032-5155 print. -- ISSN 1662-2758 online |