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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Clarke, R.S.J. | 1989 | Excursion: Rademon Church and Marybrook Mill | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Cochrane, J. | 1989 | Excursion: Gold panning in the Sperrins | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Cochrane, J.C. & Clarke, R.S.J. | 1989 | Excursion: Northern Ireland Aquarium, Portaferry and archaeological sites in the area near the town | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Cowden, D.G. | 1989 | Survey of specialist biological groups in Northern Ireland. Report on Arachnida Spiders. Annex 5 | Book | | Details... |
| Environment & Heritage Service | 1989 | Habitat survey of glen by Countryside and Wildlife Branch of D.o.E. (N.I.) | Unpublished | | Details... |
| Eversham, B.C. | 1989 | Survey of specialist biological groups in Northern Ireland. Report on Mollusca. Annex 3 | Book | | Details... |
| Eversham, B.C. | 1989 | Survey of specialist biological groups in Northern Ireland. Report on Arachnida: Opiliones (Harvest Spiders). Annex 6 | Book | | Details... |
| Faulkner, J.S. | 1989 | Milford Cutting Nature Reserve - annual report 1988 | Journal | Ann. Rept. Armagh Field Nat. Soc. | Details... |
| Foster, G.N. | 1989 | Survey of Specialist Biological Groups in Northern Ireland. Report on Aquatic Coleoptera. Annex 6 | Book | | Details... |
| Gibson, C.E. | 1989 | Contributions to the regional limnology of Northern Ireland: (3) the lakes of Co. Armagh | Journal | Ir. Nat. J. | Details... |
| Hackney, C.R. | 1989 | Laburnum alpinum (Miller) Berchtold & J. Presl. as a hedging plant in Cos. Londonderry and Tyrone | Journal | Ir. Nat. J. | Details... |
| Harding, P.T. | 1989 | Survey of specialist biological groups in Northern Ireland. Report on soil fauna (Chilopoda, Diplopoda and Ispoda). Annex 6 | Book | | Details... |
| Harding, P.T. | 1989 | Survey of specialist biological groups in Northern Ireland. Report on Odonata. Annex 12 | Book | | Details... |
| Honneyman, D.J. | 1989 | Excursion: Ballymena, Cullybackey and district | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Kelly, J.G. | 1989 | Geology and caves of Cuilcagh Mountain, counties Fermanagh and Cavan | Journal | Ir. Speleol. | Details... |
| Leach, S.J. | 1989 | Halimione portulacoides (L.) Allen in Co. Down | Journal | Ir. Nat. J. | Details... |
| Ledsham, D. | 1989 | Excursion: Garron Plateau | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Lott, D.A. & Meharg, M.J. | 1989 | Survey of specialist biological groups in Northern Ireland. Report on Carabidae and other Coleoptera | Book | | Details... |
| Lyle, P. & Patton, D.J.S. | 1989 | The petrography and geochemistry of the Upper Basalt Formation of the Antrim Lava Group in north-east Ireland | Journal | Ir. J. Earth Sci. | Details... |
| MarEnCo & Environment & Heritage Service | 1989 | Initial results of monitoring of invertebrate populations on mud flats in Inner Belfast Lough | Unpublished | | Details... |
3701 references found.