| Prehistory of Sri Lanka, The - Part 2 | S.U | Deraniyagala | 1992 | History |
| Preliminary Analysis of the Determinants of Nutritional Welfare in Sri Lanka | Neville | Edirisinghe | 1984 | General |
| Premadasa of Sri Lanka - A Political Biography | Bradman | Weerakoon | 1992 | Politics |
| Premadasa of Sri Lanka - What Bradman Weerakoon Did Not Say | R.W. | Perera | 1993 | Politics |
| Prescence of the Past, The - Chronicles, Politics & Culture in Sinhala Life | Steve | Kemper | N/A | General |
| President Jayewardene's Speech at CHOGM 1985 | Ministry of State | N/A | 1985 | Politics |
| President Premadasa and I, Our Story | B.Sirisena | Cooray | 2002 | Politics |
| President's House, The: From A Private Residence To President's House | K. D. G. | Wimalaratne | 2006 | General |
| President. The - Jayewardene Felicitation | N/A | N/A | 1978 | General |
| Presidential Commission of Inquiry Into the Affairs of Air Lanka Limited | Govt of Sri Lanka | N/A | 1987 | Politics |
| Press in Ceylon, The | W.L. | Fernando | 1973 | General |
| Press With the Toes in the Grass | Barbara | Sansoni | 2003 | Literature |
| Prevention and Alleviation of Disease | B.S. | Jayawardene | 1949 | General |
| Preventive Diplomacy | Kumar | Rupesinghe | 2008 | General |
| Price Catalogue of Ancient Coins of Ceylon | T.M. | de Silva Abeywardene | 1952 | General |
| Priest, Pundit & Pedagogue - Rev. Fr W.L.A.Don Peter | Reginald Masson | Rodrigo | 1991 | Religion |
| Primer on Building Community Leaders, A P.E.A.C.E | Maureen | Seneviratne | 2007 | General |
| Prince & Princess of Wales Colleges, Moratuwa - Jubilee Souvenir, 1876 - 1951 | N/A | N/A | 1951 | General |
| Prince of Wales Eastern Book, The - Voyages of HMS Renown 1921-22 | N/A | N/A | 1922 | General |
| Prince Vijaya Pala of Ceylon 1634-1654, The | P.E. | Pieris | 1928 | History |
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