| #301 | Oxy - fuel news. -- Washington : Hart Fuels Information Services. -- ISSN 1072-8759 |
| #302 | Pacific and Asian Journal of Energy. -- New Delhi : Tata Mc Graw-Hill Publishing Company Limited, 1987-. -- ISSN 0970-3888 |
| #303 | Pakistan oil & gas report. -- London : Business Monitor International, 2007-. -- ISSN 1748-4146 |
| #304 | Pakistan power report. -- London : Business Monitor International, 2007-. -- ISSN 1754-4033 |
| #305 | Paliva : odborný časopis pro plynárenství, koksárenství a úpravnictví. -- Praha : St.nakl.techn.lit., 1950-1966. -- ISSN 0369-8262 |
| #306 | Paliva a voda. -- Praha : Státní nakladatelství technické literatury, 1946-1949. -- ISSN 0369-8289 |
| #307 | Peru oil & gas report. -- London : Business Monitor International, 2005-. -- ISSN 1748-4154 |
| #308 | Petroleum intelligence weekly. -- New York : Energy Intelligence Group. -- ISSN 1528-1205 |
| #309 | Petroleum research journal. -- Tripoli : Petroleum Research Centre. -- ISSN 1727-4788 |
| #310 | Philippines oil & gas report. -- London : Business Monitor International, 2005-. -- ISSN 1748-4162 |