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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| 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'Riordan, R.M., Myers, A.A. & Cross, T.F. | 1991 | Chthamalus stellatus (Poli) and C. montagui Southward (Cirripedia): - variation in embryo numbers with species, habitat and shore level | Chapter | | Details... |
| O'Sullivan, W.M. | 1991 | The distribution of otters Lutra lutra within a major Irish river system, the Munster Blackwater catchment, 1988-90 | Journal | Ir. Nat. J. | Details... |
| Phillips, J.C.L. | 1991 | The Sections: Zoological | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Price, E.A.C. | 1991 | Investigations into the ecology and intraclonal physiology of Glechoma hederacea | Ph.D. Thesis | | Details... |
| Rice, A.L., Billett, D.S.M., Thurston, M.H. & Lampitt, R.S. | 1991 | The Institute of Oceanographic Sciences Biology Programme in the Porcupine Seabight: background and general introduction | Journal | J. Mar. Biol. Assoc. UK | Details... |
| Rodwell, J.S. | 1991 | Mires and heaths | Book | | Details... |
| Russell, B. | 1991 | Excursion: Scawt Hill | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Russell, B. | 1991 | Excursion: North Antrim Weekend: geological | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Russell, B.W. | 1991 | The Sections: Geological | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Russell, B.W. | 1991 | Excursion: Geology of the Carrickfergus area | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Shaw, J. & Gorrell, G. | 1991 | Subglacially formed dunes with bimodal and graded gravel in the Trenton drumlin field, Ontario | Journal | Geogr. Phys. Quat. | Details... |
| Smith, A.G. & Goddard, I.C. | 1991 | A 12500 year record of vegetational history at Sluggan Bog, Co. Antrim, N. Ireland (incorporating a pollen zone scheme for the non-specialist) | Journal | New Phytol. | Details... |
| Smith, R.A., Johnston, T.P. & Legg, I.C. | 1991 | Geology of the country around Newtownards | Book | | Details... |
| Somerfield, P.J. | 1991 | Additional records of marine Halacaridae (Acari: Prostigmata) from Ireland | Journal | Bull. Ir. biogeog. Soc. | Details... |
| Stemmerick, L., Vigran, J.O. & Piasecki, S. | 1991 | Dating of late Palaeozoic rifting events in the North Atlantic: new biostratigraphic data from the uppermost Devonian and Carboniferous of East Greenland | Journal | Geol. | Details... |
| Strack, H.L. | 1991 | A second report of Leptochiton scabridus (Jeffreys, 1880) from Ireland | Journal | Conch. Newsletter | Details... |
| Thrush, S.F. | 1991 | The ecology of soft bottoms | Chapter | | Details... |
| Tully, O., McCarthy, T.K. & O'Donnell, D. | 1991 | The ecology of the Corixidae (Hemiptera:Heteroptera) in the Corrib catchment, Ireland | Journal | Hydrobiologia | Details... |
| Turner, J.R. & Warman, C.G. | 1991 | The mobile fauna of sublittoral cliffs | Chapter | | Details... |
4555 references found.