| #421 | Portable design : The authority for mobile technologies and products. -- Tulsa : PennWell, 1995-. -- ISSN 1086-1300 |
| #422 | Power electronics technology for engineers, designers and integrators. -- Overland Park : Primedia Business Magazines & Media, 2001-. -- ISSN 1540-2800 |
| #423 | Powerconversion & intelligent motion. -- Ventura : Intertec International, 1985-1998. -- ISSN 0885-0259 |
| #424 | Praktická elektronika - Amatérské radio. -- Praha : Amaro s.r.o., 2011-. -- ISSN 1804-7173 |
| #425 | Precision engineering. -- Guildford : IPC Science and Technology Press, 1979-. -- ISSN 0141-6359 print. -- ISSN 1873-2372 online |
| #426 | Pro sound news. -- London : Pro Sound News Publications, Spotlight Publications Limited, 1986-. -- ISSN 0269-4735 |
| #427 | Proceedings of the IEEE. -- New York : Institute of Electrical and Electronics Engineers, 1963-. -- ISSN 0018-9219 print. -- ISSN 1558-2256 online |
| #428 | Proceedings of the Institution of Electrical Engineers. -- London : Institution of Electrical Engineers, 1963-1979. -- ISSN 0020-3270 |
| #429 | Productronic. -- Heidelberg : Hüthig, 1985-. -- ISSN 0930-1100 |
| #430 | Produktion von Leiterplatten und Systemen. -- Saalgau : Leuze, 1999-. -- ISSN 1436-7505 |