| #261 | Polar meteorology and glaciology. -- Tokyo : National Institute of Polar Research, 1998-. -- ISSN 1344-3437 |
| #262 | Polar Record. -- Cambridge : Scott Polar Research Institute, 1931-. -- ISSN 0032-2474 print. -- ISSN 1475-3057 online |
| #263 | Political geography. -- Oxford : Butterworth-Heinemann, 1992-. -- ISSN 0962-6298 print. -- ISSN 1873-5096 online |
| #264 | Polski Przeglad Kartograficzny. -- Warszawa : Polskie Towarzystwo Geograficzne, 1969-. -- ISSN 0324-8321 |
| #265 | Population. -- Paris : Institut national d'études démographiques, 1946-. -- ISSN 0032-4663 |
| #266 | Population index. -- Princeton : Princeton University, Office of Population Research, 1937-1999. -- ISSN 0032-4701 |
| #267 | Post-Soviet geography and economics. -- Palm Beach : Winston, 2000-. -- ISSN 1088-9388 |
| #268 | Praxis Geographie. -- Braunschweig : Westermann, 1979-. -- ISSN 0171-5178 |
| #269 | Problemi na geografijata. -- Sofiâ : Bulgarska akademiâ na naukite, 1974-. -- ISSN 0204-7209 |
| #270 | Problemy fiziki atmosfery. -- Leningrad : Izdatel´stvo Leningradskogo universiteta, 1963-. -- ISSN 0552-2056 |