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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Hart, W.E. | 1901 | Peacock butterfly near Derry | Journal | Ir. Nat. | Details... |
| Hart, W.E. | 1910 | Corydalis claviculata in Co. Derry | Journal | Ir. Nat. | Details... |
| Hartley, J.J. | 1933 | The geology of north-eastern Tyrone and the adjacent parts of county Londonderry | Journal | Proc. Roy. Ir. Acad. | Details... |
| Hartley, J.J. | 1938 | The Dalradian rocks of the Sperrin Mountains and adjacent areas in Northern Ireland | Journal | Proc. Roy. Ir. Acad. | Details... |
| Hasse, L. | 1890 | Objects from the sandhills at Portstewart and Grangemore, and their antiquity | Journal | Proc. Pap. Roy. Soc. Antiq. Ir. | Details... |
| Henry, S. | 1897 | White swallow at Coleraine | Journal | Ir. Nat. | Details... |
| Herring, I.J. & May, A.McL. | 1940 | The gallery graves of Co. Londonderry | Journal | Ir. Nat. J. | Details... |
| Hirons, K.R. | 1982 | Lateglacial pollen assemblages from Wattstown, Co. Londonderry | Journal | Ir. Nat. J. | Details... |
| Hogan, A.R. | 1986 | Manuscript list of uncommon and rare species of bryophytes for Benbradagh cliffs and block scree (Conservation & Wildlife Branch, D.o.E.(N.I.)) | Manuscript | | Details... |
| Holyoak, G.A. | 2005 | Widespread occurrence of Vertigo geyeri (Gastropoda: Vertiginidae) in north and west Ireland | Journal | Ir. Nat. J. | Details... |
| Houston, J.D. | 1913 | Rare mosses in Counties Antrim and Derry | Journal | Ir. Nat. | Details... |
| Houston, J.D. | 1925 | Botanical records | Journal | Ir. Nat. J. | Details... |
| Houston, J.D. | 1925 | Bird's nest orchid | Journal | Ir. Nat. J. | Details... |
| Hughes, D.H. | 1992 | Management plan for The Umbra NR | Unpublished | | Details... |
| Institute of Offshore Engineering | 1985 | Northern Ireland littoral survey. First report January-February 1984 | Report | | Details... |
| Irwin, A.M. | 1947 | Mosse - dates and places where found | Unpublished | | Details... |
| Johnson, W.F. | 1921 | Physalia on the Co. Derry coast | Journal | Ir. Nat. | Details... |
| Kertland, M.P.H. | 1956 | West Indian bean washed up on Co. Londonderry shore | Journal | Ir. Nat. J. | Details... |
| Kertland, M.P.H. | 1969 | Proposal to publish a supplement to A Flora of N-E Ireland | Journal | Ir. Nat. J. | Details... |
| Kertland, M.P.H. | 1972 | A supplement to the second editon of the Flora of the north-east of Ireland | Book | | Details... |
367 references found.