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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Welch, R.J. | 1898 | Hydrobia jenkinsi Smith in Co. Down. | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1899 | Land and freshwater Mollusca of Clonbrock, Co. Galway | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1900 | Amphipeplea glutinosa Muller, in Ireland | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1900 | Notes on the fauna of County Kerry | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Welch, R.J. | 1901 | Planorbis corneus in Co. Sligo | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1902 | Additions to the list of Mollusca of Clonbrock | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1902 | Longford land and freshwater Mollusca | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1903 | Rare or local Irish land and freshwater Mollusca | Journal | J. Conch. (Lond.) | Details... |
| Welch, R.J. | 1904 | Decalcification of freshwater shells | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1904 | Temporary disappearance of Paludestrina ventrosa | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1904 | Food of Gillaroo trout | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1904 | Paludestrina (Hydrobia) jenkinsi | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1904 | Rare or local Irish land and freshwater Mollusca | Journal | J. Conch. (Lond.) | Details... |
| Welch, R.J. | 1904 | Exhibits 13.9.04 | Journal | J. Conch. (Lond.) | Details... |
| Welch, R.J. | 1905 | Freshwater shells in masses in shell-marl | Journal | J. Conch. (Lond.) | Details... |
| Welch, R.J. | 1906 | The land and fresh-water Mollusca of North-West Donegal. 2. Rosguill Peninsula and Sheephaven Dunes | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1908 | Bythinia leachii: an addition to the Irish fauna, with some notes on its distribution and also on that of Planorbis corneus | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1909 | Pisidium personatum - correction | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1926 | Paludestrina jenkinsi Smith, at Antrim | Journal | Ir. Nat. J. | Details... |
| Welch, R.J. | 1926 | Paludestrina jenkinsi in Lower Lough Erne | Journal | Ir. Nat. J. | Details... |
956 references found.