| #341 | Pro-Energy magazín. -- Praha : Stenella, 2007-. -- ISSN 1802-4599 |
| #342 | Proceedings of the Institution of Civil Engineers, Energy. -- London : Thomas Telford, 2007-. -- ISSN 1751-4223 |
| #343 | Proceedings of the Institution of Civil Engineers. Maritime engineering. -- Velká Británie : London : Telford, 2004-. -- ISSN 1741-7597 |
| #344 | Proceedings of the Institution of Electrical Engineers, Part A, Power engineering. -- London : Institution of Electrical Engineers, 1955-1962. -- ISSN 0369-8882 print. -- ISSN 2054-040X online |
| #345 | Proceedings of the Institution of Mechanical Engineers. Part A, Power and process engineering. -- Velká Británie : London : Mechanical Engineering Publications, 1983-. -- ISSN 0263-7138 |
| #346 | Progress in energy and combustion science. -- Oxford : Pergamon Press, 1975-. -- ISSN 0360-1285 print. -- ISSN 1873-216X online |
| #347 | Progress in nuclear energy. -- Oxford : Pergamon, 1977-. -- ISSN 0149-1970 print. -- ISSN 1878-4224 online |
| #348 | Promyšlennaja energetika. -- Moskva : Ènergia, 1956-. -- ISSN 0033-1155 |
| #349 | Propane Canada. -- Calgary : Sanford Evans Pub., 1968-. -- ISSN 0033-1260 |
| #350 | Propriété industrielle nucleaire. -- Paris : Société Brevatome, 1959-1976. -- ISSN 0033-1449 |