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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| O'Connor, J.P. & Nash, R. | 1984 | Insects imported into Ireland 6. Records of Orthoptera, Dermaptera, Lepidoptera and Coleoptera | Journal | Ir. Nat. J. | Details... |
| O'Mahony, E. | 1935 | Robin and earwigs | Journal | Ir. Nat. J. | Details... |
| O'Sullivan, G. | 1987 | Lough Beltra 1986. Proceedings of the 3rd Annual Lough Beltra Workshop, Galway, 25 February 1987 | Book | | Details... |
| Ordnance Survey of Northern Ireland | 1983 | The Irish grid | Report | | Details... |
| Perring, F.H. | 1970 | Biological recording and the Irish grid | Journal | Ir. Nat. J. | Details... |
| Perring, F.H. (ed.) | 1978 | Critical supplement to the atlas of the British Flora | Book | | Details... |
| Plant, C.W. | 1994 | Provisional atlas of the lacewings and allied insects (Neuroptera, Megaloptera, Rhaphidioptera and Mecoptera) of Britain and Ireland | Book | | Details... |
| Praeger, R.Ll. | 1902 | On types of distribution in the Irish flora | Journal | Proc. Roy. Ir. Acad. | Details... |
| Praeger, R.Ll. | 1923 | Review: 'Memoir and map of localities of minerals of economic importance' by G.A.J. Cole | Journal | Ir. Nat. | Details... |
| Preston, C.D., Pearman, D.A. & Dines, T.D. | 2002 | New atlas of the British and Irish Flora | Book | | Details... |
| Raine, R., Whelan, D., Conway, N., Joyce, B., Moloney, M., Hoey, M.J. & Patching, J.W. | 1993 | The oceanography of southwest Ireland: current research activities | Chapter | | Details... |
| Rasmont, P., Speight, M.C.D. & Picton, B.E. | 1986 | A computer programme for conversion of the Irish Transverse Mercator projection to the Universal Transverse Mercator Projection | Journal | Ir. Nat. J. | Details... |
| Reynolds, J. | 2003 | Book review: 'Atlas of the land and freshwater molluscs of Britain & Ireland' by M. Kerney | Journal | Ir. Nat. J. | Details... |
| Rich, T.C.G. & Lewis, J. | 1999 | Use of herbarium material for mapping the distribution of Erophila (Brassicaceae) taxa sensu Filfilan & Elkington in Britain and Ireland | Journal | Watsonia | Details... |
| Robinson, I.S. | 1979 | The tidal dynamics of the Irish and Celtic Seas | Journal | Geophys. J. Roy. Astronom.Soc. | Details... |
| Sankey, J.H.P. | 1988 | Provisional atlas of the harvest-spiders (Arachnida: Opiliones) of the British Isles | Book | | Details... |
| Scharff, R.F. | 1916 | On the Irish names of invertebrate animals | Journal | Ir. Nat. | Details... |
| Seaward, D.R. | 1982 | Sea area atlas of the marine molluscs of Britain and Ireland | Book | | Details... |
| Seaward, D.R. | 1990 | Distribution of the marine molluscs of north west Europe | Book | | Details... |
| Seaward, M.R.D. | 1976 | Lichen mapping scheme: a progress report for Ireland | Journal | Ir. Nat. J. | Details... |
210 references found.