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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Welch, R.J. | 1903 | Clausilia bidentata and Balea perversa in Ireland | Journal | J. Conch. (Lond.) | Details... |
| Welch, R.J. | 1903 | Rare or local Irish land and freshwater Mollusca | Journal | J. Conch. (Lond.) | Details... |
| Welch, R.J. | 1904 | Rare woodlice from Co. Dublin and Co. Down | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1904 | Helix (Helicella) zakkarensis | Journal | Proc. Belf. Nat. Fld. Club | 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 | Some new stations for Trichoniscus roseus | Journal | Ir. Nat. | 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. | 1906 | Land and freshwater Mollusca from Co. Roscommon | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1907 | Helix hortensis in Co. Antrim | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1907 | Limax cinereo-niger - a correction | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1908 | Exotic land Mollusca at Belfast | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1908 | Testacella maugei Fer. at Cork | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1908 | Bythinia leachii | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Welch, R.J. | 1908 | Vertigo moulinsiana | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Welch, R.J. | 1909 | Land-shell rain-wash at Horn Head, Co. Donegal | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1909 | Helix hortensis in Co. Down | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1909 | Land shell deposit on sandhills, Horn Head | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Welch, R.J. | 1910 | Variation due to environment, illustrated mainly by the Mollusca | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Welch, R.J. | 1925 | Succinea oblonga in Co. Fermanagh | Journal | Ir. Nat. J. | Details... |
501 references found.