| #451 | Packaging technology and management. -- Velká Británie : Stanmore : Institute of Packaging, 1974, 1974-1976 |
| #452 | Paintindia, Annual. -- Indie : Bombay : Colour Publications, 1968-. -- ISSN 0369-8262 |
| #453 | Paintindia, Annual. -- Indie : Paintindia, Annual, 1968-1974. -- ISSN 0030-9540 |
| #454 | Paper. -- New York : Paper, 1984-. -- ISSN 0892-3809 |
| #455 | Papoušci : časopis pro chovatele a přátele papoušků. -- České Budějovice : DONA, 2001-. -- ISSN 1213-4619 |
| #456 | Patterson engineer. -- Spojené státy americké : East Liverpool, OH : Patterson Foundry and Machine Company, 1958-1962 |
| #457 | Periodica polytechnica, Mechanical engineering. -- Budapest : Technical University, 1969-. -- ISSN 0324-6051 |
| #458 | Permanent Way. -- Japonsko : Tokyo : Japan Railway Civil Engineering Assoc, 1969-1970 |
| #459 | Permanent Way Institution - Journal and Report of Proceedings. -- Velká Británie : London : vl. n., 1965-1970 |
| #460 | Personnel journal. -- Spojené státy americké : Swarthmore : Williams & Wilkins,, 1927-1996. -- ISSN 0031-5745 |