| #331 | Pro-Energy magazín. -- Praha : Stenella, 2007-. -- ISSN 1802-4599 |
| #332 | Proceedings of the Institution of Civil Engineers, Energy. -- London : Thomas Telford, 2007-. -- ISSN 1751-4223 |
| #333 | 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 |
| #334 | Progress in energy and combustion science. -- Oxford : Pergamon Press, 1975-. -- ISSN 0360-1285 print. -- ISSN 1873-216X online |
| #335 | Progress in nuclear energy. -- Oxford : Pergamon, 1977-. -- ISSN 0149-1970 print. -- ISSN 1878-4224 online |
| #336 | Promyšlennaja energetika. -- Moskva : Ènergia, 1956-. -- ISSN 0033-1155 |
| #337 | Propane Canada. -- Calgary : Sanford Evans Pub., 1968-. -- ISSN 0033-1260 |
| #338 | Propriété industrielle nucleaire. -- Paris : Société Brevatome, 1959-1976. -- ISSN 0033-1449 |
| #339 | Qatar power report. -- London : Business Monitor International, 2005-. -- ISSN 1755-7089 |
| #340 | Referativnyj žurnal, 45, Truboprovodnyj transport. -- Moskva : VINITI, 1962-. -- ISSN 0034-2610 |