| Prodigal Son & Other Stories, The | B.R. | Blaze | 1965 | Literature |
| Prodromus Faunae Zeylanicae - E.F.Kelaart | Rohan | Pethiyagoda | 1998 | General |
| Prodromus Faunae Zeylanicae: Being Contributions to the Zoology of Ceylon | E.F. | Kelaart | 1852 | General |
| Production and Marketing of Banana in Beminiwatte | M.P. | Perera | 1976 | General |
| Production of Other Crops in Paddy Fields in Yala 1972 | A.S. | Ranatunga | 1974 | General |
| Professional, The | Ashok | Ferrey | 2013 | Literature |
| Profile of Ceylon\'s Catholic Heritage, A | Francis. O, Rev. | Tambimuttu | 1961 | Religion |
| Profiling Sri Lankan Cinema | Wimal | Dissanayake | 2000 | General |
| Profits of War - World-Wide Arms Conspiracy | Ari | Ben-Menashe | 1992 | General |
| Progress - Vol 4, No 1, March 1984 | Ministry of Plan Implementation | N/A | 1984 | General |
| Progress - Vol 4, No 2, June 1984 | Ministry of Plan Implementation | N/A | 1984 | General |
| Progress - Vol 5, No 1, March 1985 | Ministry of Plan Implementation | N/A | 1985 | General |
| Progress - Vol 5, No 3, September 1985 | Ministry of Plan Implementation | N/A | 1985 | General |
| Progress 1909 - 1959 A. M. M. Abdul Cader ( A.M.M.A.C.) | N/A | N/A | 1959 | General |
| Progress 1986 | Ministry of Coconut Industries | N/A | 1986 | General |
| Progress of the Colombo Plan 1967-1968 | Colombo Plan Bureau | N/A | 1969 | General |
| Progressive Grammar of Common Tamil, A | A.H. | Arden | 1934 | General |
| Progrss of the Colombo Plan | Colombo Plan Bureau | N/A | 1966 | General |
| Projects of National Development | The Colombo Plan | N/A | 1972 | General |
| Proposals Sent to the Govt of India by the Govt of Sri Lanka | Govt of Sri Lanka | N/A | 1986 | General |
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