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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Welch, R.J. | 1899 | Land and freshwater Mollusca of Clonbrock, Co. Galway | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1899 | Large colony of Vertigo antivertigo Drap. in Co. Down | Journal | J. Conch. (Lond.) | Details... |
| Anon. | 1900 | Vertigo antivertigo in Ireland | Journal | Ir. Nat. | Details... |
| Anon. | 1900 | Some new varieties of Irish land Mollusca | Journal | Ir. Nat. | Details... |
| Anon. | 1900 | Irish land and freshwater Mollusca | Journal | Ir. Nat. | Details... |
| Anon. | 1900 | Belfast & Dublin Naturalists' Field Clubs | Journal | Ir. Nat. | Details... |
| Anon. | 1900 | Proc. Conch. Soc. meeting | Journal | J. Conch. (Lond.) | Details... |
| Anon. | 1900 | Proc. Conch. Soc. meeting | Journal | J. Conch. (Lond.) | Details... |
| Beaumont, W.I. | 1900 | The fauna and flora of Valencia Harbour on the west coast of Ireland. Part II.- the benthos (dredging and shore-collecting). VII. Report on the results of dredging and shore-collecting | Journal | Proc. Roy. Ir. Acad. | Details... |
| Beaumont, W.I. | 1900 | The fauna and flora of Valencia Harbour on the west coast of Ireland. Part II.- the benthos (dredging and shore-collecting). XII. Report on the opisthobranchiate Mollusca | Journal | Proc. Roy. Ir. Acad. | Details... |
| Belfast Naturalists' Field Club | 1900 | Belfast Naturalists' Field Club | Journal | Ir. Nat. | Details... |
| Belfast Naturalists' Field Club | 1900 | Belfast Naturalists' Field Club | Journal | Ir. Nat. | Details... |
| Belfast Naturalists' Field Club | 1900 | Summer Programme: Killough and St. John's Point | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Belfast Naturalists' Field Club | 1900 | Winter Session: Science gossip | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Browne, E.T. | 1900 | The fauna and flora of Valencia Harbour on the west coast of Ireland. Part I. - the pelagic fauna. I. Notes on the pelagic fauna (1895-98) | Journal | Proc. Roy. Ir. Acad. | Details... |
| Collinge, W.E. | 1900 | Arion empiricorum Fer., var. bocagei Simr. | Journal | Ir. Nat. | Details... |
| Crick, G.C. | 1900 | Review: 'Monograph of the Carboniferous Cephalopoda of Ireland' by A.H. Foord | Journal | Ir. Nat. | Details... |
| Dublin Naturalists' Field Club | 1900 | Dublin Naturalists' Field Club | Journal | Ir. Nat. | Details... |
| Green, W.A. | 1900 | Scalariform Helix nemoralis living at Bundoran | Journal | Ir. Nat. | Details... |
| Nichols, A.R. | 1900 | A list of the marine Mollusca of Ireland | Journal | Proc. Roy. Ir. Acad. | Details... |
1505 references found.