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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Campbell, D.C. | 1919 | Hoopoe in Inishowen | Journal | Ir. Nat. | Details... |
| Campbell, W.H. | 1884 | Notes on the past season in Cos Derry and Donegal | Journal | Ent. | Details... |
| Carpenter, G.H. | 1910 | Irish Field Club Union: Rosapenna Conference. Apterygota | Journal | Ir. Nat. | Details... |
| Carpenter, G.H. & Praeger, R.Ll. | 1892 | Spirula, Ianthina and Velella at Lough Swilly | Journal | Ir. Nat. | Details... |
| Carrothers, E.N. | 1969 | Adiantum capillus-veneris L. extended range in Co. Donegal | Journal | Ir. Nat. J. | Details... |
| Carter, A.B. | 1999 | Spring weekend: Inishowen, Co. Donegal Friday-Monday 22-25 May: Summary Report | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Carter, R.W.G. | 1982 | Recent variations in sea-level on the north and east coasts of Ireland and associated shoreline response | Journal | Proc. Roy. Ir. Acad. | Details... |
| Carter, R.W.G., Hamilton, A.C. & Meadows, M. | 1979 | Post-depositional deformation of glacial lake sediments by a readvancing glacier: an example from Killyverry, Co. Donegal | Journal | Ir. Nat. J. | Details... |
| Charlesworth, J.K. | 1937 | The glacial cirques of Co. Donegal | Journal | Ir. Nat. J. | Details... |
| Charlesworth, J.K. | 1942 | Survey of Inishtrahull: Part 2. Glacial erratics from Inishtrahull | Journal | Ir. Nat. J. | Details... |
| Cheetham, C.A. | 1912 | Donegal Plants | Journal | Ir. Nat. | Details... |
| Cheetham, C.A. | 1912 | High-level deposits of marine shells in Donegal | Journal | Ir. Nat. | Details... |
| Clarke, R.S.J. | 1990 | Excursion: South Donegal: Archaeological | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Clarke, R.S.J. | 1999 | Spring weekend: Inishowen, Co. Donegal Firday-Monday 22-25 May: Archaeological and historical report | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Cole, G.A.J. | 1900 | On metamorphic rocks in eastern Tyrone and southern Donegal | Journal | Trans. Royal Ir. Acad. | Details... |
| Cole, G.A.J. | 1908 | Boulder at Narin | Journal | Ir. Nat. | Details... |
| Colgan, N. | 1901 | Carex aquatilis Wahlb. in County Dublin | Journal | Ir. Nat. | Details... |
| Colhoun, E.A., Ryder, A.T. & Stephens, N. | 1973 | 14C age of an oak-hazel forest bed at Drumskellan, Co. Donegal, and its relation to late Midlandian and Littletonian raised beaches | Journal | Ir. Nat. J. | Details... |
| Collier, E. | 1909 | Helix nemoralis L. in NW Donegal | Journal | J. Conch. (Lond.) | Details... |
| Collingwood, C.A. | 1899 | Black fish at Lough Swilly | Journal | Ir. Nat. | Details... |
453 references found.