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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Twist, S. | 1989 | Excursion: Belshaw's Quarry | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Wells, J.H. | 1989 | Northern Ireland peregrines 1989. Results | Unpublished | | Details... |
| Weyl, R.S. & Leach, S.J. & Waterman, A.C. | 1989 | Additions and amendments to the Lough Neagh Flora | Journal | Ir. Nat. J. | Details... |
| Wilde, J. | 1989 | Aberrant dactylorchid in Co. Antrim | Journal | Ir. Nat. J. | Details... |
| Wilde, J. | 1989 | Excursion: Bird evening, Lagan Meadows | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Wilde, J. | 1989 | Excursion: Crumlin Glen | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Wilde, J. | 1989 | Excursion: Woodburn Glen | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Wilson, P. & Farrington, O. | 1989 | Radiocarbon dating of Holocene evolution of Magilligan Foreland, Co. Londonderry | Journal | Proc. Roy. Ir. Acad. | Details... |
| Woods, R.G. | 1989 | Survey of specialist biological groups in Northern Ireland. Report on Lichens and Bryophytes. Annex 2 | Book | | Details... |
| Allen, D. | 1990 | The status and distribution of Eilema lurideola (Zinck.), common footman and E. complana (L.), scarce footman (Lepidoptera) in Northern Ireland | Journal | Ir. Nat. J. | Details... |
| Allen, D. | 1990 | A record of Diachrysia orichalcea (Fabr.) (Lepidoptera), slender burnished brass, from Co. Down | Journal | Ir. Nat. J. | Details... |
| Allen, D., Cryer, R. & Gray, M. | 1990 | The macro-moths (Lepidoptera) of Rathlin Island, Co. Antrim | Journal | Ir. Nat. J. | Details... |
| Allen, M.D.B. | 1990 | Excursion: Joint meeting with BSBI to Lough Erne | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Allen, M.D.B. & Boyd, T.D. | 1990 | Excursion: Killyleagh area | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Anderson, R. | 1990 | Adalia bipunctata (L.) (Coleoptera: Coccinellidae) in Northern Ireland | Journal | Ir. Nat. J. | Details... |
| ASH MW | 1990 | Distribution of wading bird species: discussion document. Belfast Harbour Local Plan | Published | | Details... |
| Baxter, J. & Boaden, P. | 1990 | Coastal resources of the Irish Sea - Northern Ireland | Chapter | | Details... |
| Beesley, S. | 1990 | The Sections: Botanical | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Beesley, S. & Clarkson, M. | 1990 | Excursion: Donaghadee | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Black, T. | 1990 | Excursion: Geology at Cultra | Journal | Proc. Belf. Nat. Fld. Club | Details... |
3701 references found.