| Tribal Hangover, The | James | Goonewardene | 1995 | Literature |
| Tribute To An Asian Statesman's Vision - A.Ratnayake | N/A | N/A | 1971 | Politics |
| Tribute to Malalasekera | Nemsiri | Mutukumara | 1981 | General |
| Trigonometrical & Cadastral Survey of Ceylon | Govt of Ceylon | N/A | 1882 | General |
| Trincomalee Bronzes - An Inquiry Into Their Origin & Impact on Ceylon History | W., Dr | Balendra | 1953 | General |
| Trinity | Ramya Chamalie | Jirasinghe | 2008 | General |
| Trinity College One Hundred Years 1872 - 1972 | Trinity College, Kandy | N/A | 1972 | General |
| Tropical Agriculturist, The - Vol LXVII, No 2, 1926 | Dept of Agriculture | N/A | 1926 | General |
| Tropical Beach Handbook | Nick | Hanna | 1989 | General |
| Tropical Blossoms Of The Pacific | Dorothy | Hargreaves | 1970 | General |
| Tropical Development 1880-1913 - Studies in Economic Progress | W. Arthur | Lewis | 1970 | General |
| Tropical Marine Aquaria | Graham F. | Cox | 1977 | General |
| Tropical Nutrition and Dietetics | Lucius | Nicholls | 1945 | General |
| Tropical Planting & Gardening with Special Reference to Ceylon | H.F. | Macmillan | 1962 | General |
| Tropical Rainforests - A Resource Book for Secondary School Teachers - IUCN | Charmalee D. | Jayasinghe | 2005 | General |
| Tropical Soil Science, Elements of | T. | Eden | 1956 | General |
| Tropical Treasury, A (A Souvenir of the East) | Peter | Gillespie | 1946 | Literature |
| Tropical Trees Of The Pacific | Dorothy | Hargreaves | 1970 | General |
| Trousered Harijan, The | Hubert E | Weerasooriya | 1946 | Literature |
| Truculenter, The, Odyssey of the Glamorous Sri Lankan Wildlife | Asela | Karunaratne | 2020 | General |
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