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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Knox, A. | 1968 | Stevensite from Co. Down | Journal | Ir. Nat. J. | Details... |
| Lacroix, A. | 1886 | Sur les roches basaltiques du Comte d'Antrim (Irlande) | Journal | C.R. Acad. Sci. Paris | Details... |
| Laganside Corporation | 1991 | Laganlife | Brochure | | Details... |
| Lambert, D.S. | 1971 | Teesdalia nudicaulis R.Br. in Co. Londonderry | Journal | Ir. Nat. J. | Details... |
| Lambert, D.S. | 1975 | Taraxacum records from Down (H38) and Antrim (H39) | Journal | Ir. Nat. J. | Details... |
| Lambert, D.S. | 1985 | Plant records from Co.'s Tyrone and Londonderry | Journal | Ir. Nat. J. | Details... |
| Lambert, D.S. | 1992 | Manuscript Flora of Co. Tyrone | Manuscript | | Details... |
| Lamplugh, G.W. | 1905 | Review: 'The Larne raised beach: a contribution to the Neolithic history of the North of Ireland' by R.L. Praeger | Journal | Ir. Nat. | Details... |
| Langham, C. | 1897 | Coleoptera taken at Tempo, Enniskillen | Journal | Ir. Nat. | Details... |
| Langham, C. | 1905 | Some Lepidoptera from County Fermanagh | Journal | Ir. Nat. | Details... |
| Langham, C. | 1906 | Fork-tailed petrel in Co. Fermanagh | Journal | Ir. Nat. | Details... |
| Langham, C. | 1913 | Stock doves in County Fermanagh | Journal | Ir. Nat. | Details... |
| Langham, C. | 1914 | Schoenobius mucronellus in County Fermanagh | Journal | Ir. Nat. | Details... |
| Langham, C. | 1921 | Bats in Co. Fermanagh | Journal | Ir. Nat. | Details... |
| Langham, C. | 1922 | Gonia fasciata in Fermanagh | Journal | Ir. Nat. | Details... |
| Langton, P.H. | 2002 | A preliminary survey of the non-biting midges (Diptera: Chironomidae) of Northern Ireland | Journal | Bull. Ir. biogeog. Soc. | Details... |
| Langtry, G. | 1874 | On the occurrence of the Middle Lias at Ballycastle | Report | | Details... |
| Langtry, R.L. | 1909 | A summer fieldfare in Co. Down | Journal | Ir. Nat. | Details... |
| Larcom, T. | 1837 | Ordnance Survey of the county of Londonderry | Book | | Details... |
| Lawlor, H.C. | 1926 | Divisions of the Nendrum sun-dial | Journal | Ir. Nat. J. | Details... |
3701 references found.