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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Campbell, D.C. | 1900 | Bittern near Londonderry | Journal | Ir. Nat. | Details... |
| Campbell, D.C. | 1900 | Lepidoptera near Londonderry | Journal | Ir. Nat. | Details... |
| Davies, J.H. | 1900 | Some mosses from North-East Ireland | Journal | Ir. Nat. | Details... |
| Davies, J.H. | 1900 | Botanical notes from north Ireland | Journal | Ir. Nat. | Details... |
| Druce, G.C. | 1900 | Irish Rubi | Journal | Ir. Nat. | Details... |
| Fahy, M. | 1900 | Egyptian goose in Co. Derry | Journal | Ir. Nat. | Details... |
| Hart, W.E. | 1900 | Vanessa io in Co. Londonderry | Journal | Ir. Nat. | Details... |
| Leebody, M.J. | 1900 | Rediscovery of Poa compressa at Londonderry | Journal | Ir. Nat. | Details... |
| Linton, E.F. | 1900 | Distribution of the Alchemilla vulgaris group in Ireland | Journal | Ir. Nat. | Details... |
| Patterson, R. | 1900 | Marten in Co. Londonderry | Journal | Ir. Nat. | Details... |
| Praeger, R.Ll. | 1900 | New stations for rare plants | Journal | Ir. Nat. | Details... |
| Belfast Naturalists' Field Club | 1901 | Summer Programme: Dungiven | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Campbell, D.C. | 1901 | Arrival of the swift at Londonderry | Journal | Ir. Nat. | Details... |
| Campbell, D.C. | 1901 | Hawfinch near Londonderry | Journal | Ir. Nat. | Details... |
| Hart, W.E. | 1901 | Peacock butterfly near Derry | Journal | Ir. Nat. | Details... |
| Praeger, R.Ll. | 1901 | Pyrola secunda refound in Ireland | Journal | Ir. Nat. | Details... |
| Wright, J. | 1901 | Foraminifera of the Pleistocene clay of Bovevagh, Co. Derry | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Campbell, D.C. | 1902 | Waxwing near Londonderry | Journal | Ir. Nat. | Details... |
| Campbell, D.C. | 1902 | Albino curlew near Londonderry | Journal | Ir. Nat. | Details... |
| Campbell, D.C. | 1902 | Iceland gull at Londonderry | Journal | Ir. Nat. | Details... |
367 references found.