5,411 titles
| Posta-Közlöny | 1877-1877 | Budapest, Hungary |
| Postás Dolgozó | 1945-1998 | Budapest, Hungary |
| Poştă şi Telecomunicaţii | 1970-1973 | Bucharest, Romania |
| Poszt | 2000-2002 | Eger, Hungary |
| A Pozsonyvármegyei Régészeti Egylet értesítője | 1876-1882 | Bratislava, Slovakia |
| Práca | 1948-1988 | Bratislava, Slovakia |
| Práce | 1968-1988 | Prague, Czechia |
| Prágai Magyar Hirlap | 1922-1938 | Prague, Czechia |
| Prágai Tükör | 2000-2021 | Prague, Czechia |
| Prager Volkszeitung | 1971-1978 | Prague, Czechia |
| Pravda | 1968-1978 | Plzeň, Czechia |
| Pravda | 1946-1992 | Bratislava, Slovakia |
| Premier | 2000-2020 | Budapest, Hungary |
| Presa | 1923-1924 | Bucharest, Romania |
| Primăria Sibiului | 1992-2002 | Sibiu, Romania |
| Primăvara | 1922-1929 | Sânnicolau Mare, Romania |
| Probleme Ale Păcii și Socialismului | 1959-1979 | Bucharest, Romania |
| Probleme de Informare şi Documentare | 1990-2001 | Bucharest, Romania |
| Problems of control and information theory | 1972-1991 | Budapest, Hungary |
| Proceedings of the Microbiological Research Group of the Hungarian Academy of Sciences | 1966-1970 | Budapest, Hungary |
