| Portugal in Ceylon 1505-1658 | P.E. | Pieris | N/A | History |
| Portuguese Fragment, The | Owen | Sela | 1975 | Literature |
| Portuguese in Ceylon 1617-1638, The | Chandra Richard | De Silva | 1972 | History |
| Portuguese Missionary in 16th & 17th Century Ceylon, The - The Spiritual Conquest | C. Gaston | Perera | 2009 | Religion |
| Portuguese Missionary Methods or The Myth of "Forced Conversions". | S.G., Fr | Perera | 1956 | Religion |
| Portuguese Regimentos on Sri Lanka | Tikiri | Abeyasinghe | N/A | History |
| Portuguese Rule in Ceylon 1594-1612 | Tikiri | Abeyasinghe | 1966 | History |
| Poseidon\'s Wrath | Lucky | de Chickera | 2010 | Literature |
| Position of Women in Buddhism, The | L.S., Dr | Dewaraja | 1981 | Religion |
| Post-Colonial Sinhala Buddhist Revival & the Displacement of Buddhist Christian Majority-Minority Roles & Identities in Sri Lanka | Shanthikumar | Hettiarachchi | 2004 | Religion |
| Post-War Development Proposals | N/A | N/A | 1946 | General |
| Postage Stamps of Sri Lanka 1948-2005 (Philatelic Bureau) | N/A | N/A | 2006 | General |
| Postcolonial Identity of Sri Lankan English, The | Manique | Gunesekera | 2005 | General |
| Pottery Manufactory (Modern) | Industrial Development Board of Ceylon | N/A | 1977 | General |
| Poverello of Sri Lanka, The - Bishop Bernard Regno | Bede, Rev Fr | Barcatta | N/A | Religion |
| Powderkeg in Paradise, A, Lost Opportunity for Peace in Sri Lanka | Jon Oskar | Solnes | 2010 | General |
| Power & Religioisity in a Post-Colonial Setting - Sinhala Catholics | R.L. | Stirrat | 1992 | Religion |
| Power of Good People, The, Surviving Sri Lanka\'s Civil War | Para | Paheer | 2017 | General |
| Power of Minsdfulness, The | Nyanaponika | Thera | 2014 | Religion |
| Power of Sri Lankan Art 1943 - 2012, The | Juliet | Coombe | 2012 | General |
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