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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Hackney, P. | 1971 | Potamogeton crispus x praelongus in Co. Down | Journal | Ir. Nat. J. | Details... |
| Hackney, P. | 1981 | Potamogeton x cooperi (Fryer) and P. x undulatus Wolfg. in N E Ireland | Journal | Ir. Nat. J. | Details... |
| Haen, P.J. & Ryan, B. | 1967 | Diplostomulum spathaceum (Rudolph), a helminth new to Ireland | Journal | Ir. Nat. J. | Details... |
| Halbert, J.N. | 1897 | Agabus arcticus Payk., a water beetle new to Ireland | Journal | Ir. Nat. | Details... |
| Halbert, J.N. | 1900 | A new water mite from Ulster | Journal | Ir. Nat. | Details... |
| Halbert, J.N. | 1904 | Irish Field Club Union: Sligo conference. Acarinida: Hydrachnidae | Journal | Ir. Nat. | Details... |
| Halbert, J.N. | 1908 | Notes on the distribution of Irish freshwater (mites Hydrachnidae) | Journal | Ir. Nat. | Details... |
| Halbert, J.N. | 1913 | Review 'The aquatic Coleoptera of the Isle of Man, with some remarks on the origin of the fauna' by F. Balfour-Browne | Journal | Ir. Nat. | Details... |
| Halbert, J.N. | 1919 | Planorbis corneus in Co. Dublin | Journal | Ir. Nat. | Details... |
| Hale, P.A. | 1958 | Roach, Rutilus rutilus L., occurring in Co. Tyrone | Journal | Ir. Nat. J. | Details... |
| Hale, P.A. | 1959 | A further record of Hepatoxylon trichiuri (Cestoda) in Ireland | Journal | Ir. Nat. J. | Details... |
| Ham, S.F., Wright, J.F. & Berrie, A.D. | 1982 | The effect of cutting on the growth and recession of the freshwater macrophyte Ranunculus penicillatus (Dumort.) Bab. var. calcareus (R.W. Butcher) C.D.K. Cook | Journal | J. Envir. Man. | Details... |
| Hanitsch, R. | 1895 | The fresh-water sponges of Ireland | Journal | Ir. Nat. | Details... |
| Hanvey, W. & Anketell, M | 2001 | A review of growth in brown trout Salmo trutta (L.) from Lough Neagh and the River Main, Co. Antrim, Northern Ireland | Journal | Ir. Nat. J. | Details... |
| Harbison, J.H. | 1908 | Hydra: its movement and reactions | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Harding, J.P. & Smith, W.A. | 1974 | A key to the British freshwater cyclopid and calanoid copepods | Book | | Details... |
| Harry, O.G. | 1978 | Review: 'An iilustrated key to freshwater and soil amoebae' by F.C. Page | Journal | Ir. Nat. J. | Details... |
| Hart, H.C. | 1885 | On the botany of the River Suir | Journal | Sci. Proc. R. D. S. | Details... |
| Hartog, M. | 1910 | Review: 'The British freshwater Rhizopoda and Hellozoa' by J. Cash | Journal | Ir. Nat. | Details... |
| Haslam, S., Sinker, C. & Wolseley, P. | 1975 | British water plants | Book | | Details... |
956 references found.