| #121 | Polysar progress. -- Sarnia : Advertising and Sales Promotion Dept., 1965-. -- ISSN 0032-4027 |
| #122 | Progressive plastics. -- Toronto : Maclean-Hunter, 1959- |
| #123 | PV international plastics magazine. -- Heidelberg : Zechner & Hüthig, 1991-. -- ISSN 0941-8938 |
| #124 | RAPRA News. -- Shrewsbury : Rubber and Plastics Research Association of Great Britain, 1977-1995. -- ISSN 0140-041X |
| #125 | Referativnyj žurnal. Technologija polimernych materialov. -- Moskva : VINITI. -- ISSN 0203-6142 |
| #126 | Reifenhäuser Nachrichten. -- Troisdorf : Reifenhäuser GmbH & Co. KG Maschinenfabrik |
| #127 | Resin News. -- Richmond : O’Connor, 1961-. -- ISSN 0034-5563 |
| #128 | Resin review. -- Philadelphia : Rohm and Haas Company, Resinous Products Division, 1951-1995. -- ISSN 0034-5571 |
| #129 | Revista de Plasticos. -- Madrid : Consejo Superior de Investigaciones Científicas, 1950-1962. -- ISSN 0370-4513 |
| #130 | Revista de plásticos modernos. -- Madrid : Asociación de Prensa Profesional, 1962-. -- ISSN 0034-8708 |