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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Twist, R.S. | 1992 | Excursion: Birr weekend: geological | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Twist, R.S. | 1992 | Presidential excursion: Silent Valley | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Twist, R.S. | 1994 | Excursion: Galloway: geological report | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Twist, R.S. | 1994 | Excursion: Fermanagh weekend: geology | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Twist, R.S. | 1999 | Spring weekend: Inishowen, Co. Donegal Friday-Monday 22-25 May: Geological Report | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Twist, S. | 1989 | Excursion: Belshaw's Quarry | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Twomey, E. | 1976 | Bibliography of Irish salmon | Journal | Fish. Leafl. | Details... |
| Tyler, P.A. & Gage, J.D. | 1982 | The reproductive biology of Ophiacantha bidentata (Echinodermata: Ophiuroidea) from the Rockall Trough | Journal | J. Mar. Biol. Assoc. UK | Details... |
| Tyler, P.A., Pain, S.L. & Gage, J.D. | 1982 | The reproductive biology of the deep-sea asteroid Bathybiaster vexillifer | Journal | J. Mar. Biol. Assoc. UK | Details... |
| Ubsdell, R.A.E. | 1979 | Studies on variation and evolution in Centaurium erythraea Rafn and C. littorale (D. Turner) Gilmour in the British Isles. 3. Breeding systems, floral biology and general discussion | Journal | Watsonia | Details... |
| Ulster Wildlife Trust | 1986 | Argory Mosses Draft Management Plan | Unpublished | | Details... |
| Ulster Wildlife Trust | 1987 | Ecological survey of the Belfast Castle Estate | Report | | Details... |
| Ulster Wildlife Trust | Unknown | Argory Mosses Nature Reserve files | Unpublished | | Details... |
| Ussher, R.J. | 1893 | Frog remains from Ballynamintra cave | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1893 | The birds of the midland lakes and bogs, chiefly as observed in the breeding season | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1893 | The birds of the midland lakes and bogs | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1895 | Notes on Irish caves | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1897 | The distribution of birds breeding in Ireland | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1897 | The discovery of bones of the Great Auk in County Waterford | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1902 | Report of the committee appointed to explore caves | Journal | Ir. Nat. | Details... |
4555 references found.