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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Coates, G.N. | 1990 | The Presidential Excursion: Forest Garden, Tollymore Park | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Coates, G.N. | 1990 | The Presidential Address: Tollymore Park | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Department of Economic Development, Industrial Science Division | 1990 | The impact of commercial trawling on the benthos of Strangford Lough (interim report) | Report | | Details... |
| Environment & Heritage Service | 1990 | Survey/report on Nun's Wood (DoE Countryside & Wildlife Branch) | Report | | Details... |
| Erwin, D. | 1990 | Strangford Lough - model for conservation | Chapter | | Details... |
| Nash, R., Boston, M.R. & Nelson, B. | 1990 | The Hymenoptera Aculeata in the superfamilies Pompiloidea, Vespoidea, Sphecoidea and Apoidea of Murlough National Nature Reserve, Co. Down | Journal | Ir. Nat. J. | Details... |
| O'Neil, S. | 1990 | Soil profile development at Murlough sand spit, Co. Down | Unpublished | | Details... |
| Phillips, J. | 1990 | Excursion: Conlig | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Rippey, I. | 1990 | Alder buckthorn Frangula alnus Miller and other scarce plants in Co. Down (H38) | Journal | Ir. Nat. J. | Details... |
| Rippey, I. | 1990 | Excursion: Crawfordsburn Country Park and Clandeboye Estate | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Twist, R.S. | 1990 | Excursion: Geology of the south-east Mournes | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Wilde, J. | 1990 | Excursion: Bloody Bridge, Co. Down | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Wilde, J. | 1990 | Excursion: Bird-watching on Strangford Lough | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Allen, M.D.B. | 1991 | Excursion: Killard Point Nature Reserve | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Allen, M.D.B. | 1991 | Excursion: Cairn Wood, Ballysallagh | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Allen, M.D.B. | 1991 | Excursion: Castle Espie | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Allen, M.D.B. | 1991 | Excursion: Fungus foray, Redburn Park | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Angus, J.G. | 1991 | The Presidential Excursion: North Down coastal path | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Angus, J.G. | 1991 | The Presidential Address: North Down coastal path | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Carter, A.B. | 1991 | Excursion: Tour of Downpatrick | Journal | Proc. Belf. Nat. Fld. Club | Details... |
1178 references found.