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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| O'Connor, J.P. & Chandler, P.J. | 2000 | Distributional records of Irish Diptera | Journal | Bull. Ir. biogeog. Soc. | Details... |
| O'Connor, J.P. & Waldren, S. | 1995 | A review of the Irish distribution of Arctorthezia cataphracta (Olafsen) (Hemiptera: Coccoidea) | Journal | Bull. Ir. biogeog. Soc. | Details... |
| O'Connor, J.P., O'Connor, M.A. & Holmes, J.M.C. | 1991 | Ornamental plants and the distribution of exotic amphipods (Crustacea) in Ireland | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P., O'Connor, M.A., Wistow, S. & Ashe, P. | 1993 | Notes on the distribution of Andricus kollari (Hartig) (Hymenoptera: Cynipidae) in Ireland | Journal | Bull. Ir. biogeog. Soc. | Details... |
| O'Connor, J.P., Schonrogge, K., Ashe, P., Crawley, M.J., O'Connor, M.A., Walker, P. & Wistow, S. | 1995 | The distribution of gall-causing cynipids (Hymenoptera) on oak (Quercus) in Ireland | Journal | Bull. Ir. biogeog. Soc. | Details... |
| O'Connor, P.G. & Jeal, F. | 1984 | Some notes on the distribution of Bufo calamita Laur., the natterjack toad in Ireland deriving from a survey conducted in 1975 | Journal | Bull. Ir. biogeog. Soc. | Details... |
| O'Connor, R.J. | 1967 | Seabird breeding distribution survey | Journal | Ir. Nat. J. | Details... |
| O'Hanlon, R.P. & Bolger, T. | 1993 | Distribution and seasonal abundance of Arcitalitrus dorrieni, a terrestrial crustacean introduced to Ireland | Book | | Details... |
| O'Loughlin, E.F.M. | 1989 | Notes on the distribution of Calliostoma zizyphinum (L.) (Mollusca) on the shores and shallow waters of the Irish coast | Journal | Bull. Ir. biogeog. Soc. | Details... |
| O'Mahony, A. | 1976 | Current taxonomic and distributional research on the genus Rosa in Ireland | Journal | Bull. Ir. biogeog. Soc. | Details... |
| O'Meara, E. | 1875 | Report on the Irish Diatomacea | Journal | Proc. Roy. Ir. Acad. | Details... |
| O'Riordan, C.E. | 1967 | Cirripedes in Ireland (Irish cirripedes in the collections of the National Museum of Ireland and in the literature) | Journal | Proc. Roy. Ir. Acad. | Details... |
| O'Riordan, C.E. | 1969 | A catalogue of the collection of Irish marine Crustacea in the National Museum of Ireland | Published | | Details... |
| O'Riordan, C.E. | 1973 | Notes on the distribution of Actinauge richardi (Marion) (Coelenterata: Actinaria) off the Irish coast | Journal | Ir. Nat. J. | Details... |
| O'Riordan, C.E. | 1977 | Further specimens of Charonia lampas (L.) discovered off the coast of Co. Kerry, Ireland | Journal | Conch. Newsletter | Details... |
| O'Riordan, C.E. | 1983 | Some observations on the occurrence of Paromola cuvieri (Risso) (Crustacea) off the Irish coast | Journal | Ir. Nat. J. | Details... |
| O'Riordan, C.E. | 1985 | Some observations on the occurrence of Galeodea rugosa (L.) off the Irish coast | Journal | Conch. Newsletter | Details... |
| O'Riordan, C.E. | 1986 | Marine fauna notes from the National Museum of Ireland - 10. | Journal | Ir. Nat. J. | Details... |
| O'Riordan, R.M. | 1996 | The current status and distribution of the Australasian barnacle, Elminius modestus Darwin in Ireland | Chapter | | Details... |
| O'Shaughnessy, A. & McGrath, D. | 1996 | The endoparasitic copepod Trochicola entericus (Dollfus, 1914), newly recorded in Irish waters | Journal | Ir. Nat. J. | Details... |
1055 references found.