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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Ruttledge, W. | 1920 | Lepidoptera from Co. Mayo | Journal | Ir. Nat. | Details... |
| Sperring, C.W. | 1920 | Aglais urticae | Journal | Proc. Trans. S. Lond. Entomol. Nat. Hist. Soc. | Details... |
| Turner, H.J. | 1920 | Hydroecia crinanensis | Journal | Proc. Trans. S. Lond. Entomol. Nat. Hist. Soc. | Details... |
| Turner, H.J. | 1920 | Melitaea aurinia | Journal | Proc. Trans. S. Lond. Entomol. Nat. Hist. Soc. | Details... |
| Woodforde, F.C. | 1920-1925 | Some notes on the collection of British Macrolepidoptera in the Hope Department of the Oxford University Museum | Journal | Ent. | Details... |
| Woodforde, F.C. | 1920-1925 | Some notes on the collection of British Macrolepidoptera in the Hope Department of the Oxford University Museum | Journal | Ent. | Details... |
| Woodforde, F.C. | 1920-1925 | Some notes on the collection of British Macrolepidoptera in the Hope Department of the Oxford University Museum | Journal | Ent. | Details... |
| Woodforde, F.C. | 1920-1925 | Some notes on the collection of British Macrolepidoptera in the Hope Department of the Oxford University Museum | Journal | Ent. | Details... |
| Greer, T. | 1920-21 | The Macrolepidoptera of county Tyrone | Journal | Ent. | Details... |
| Greer, T. | 1920-21 | The Macrolepidoptera of county Tyrone | Journal | Ent. | Details... |
| Greer, T. | 1920-21 | The Macrolepidoptera of county Tyrone | Journal | Ent. | Details... |
| Greer, T. | 1920-21 | The Macrolepidoptera of county Tyrone | Journal | Ent. | Details... |
| Greer, T. | 1920-21 | The Macrolepidoptera of county Tyrone | Journal | Ent. | Details... |
| Adkin, R. | 1921 | Diaphora mendica | Journal | Proc. Trans. S. Lond. Entomol. Nat. Hist. Soc. | Details... |
| Baring, C. | 1921 | Acherontia atropos on Lambay | Journal | Ir. Nat. | Details... |
| Crawford, W.M. | 1921 | An aberration of Argynnis aglaia | Journal | Ir. Nat. | Details... |
| Greer, T. | 1921 | Sesia formicaeformis, a correction | Journal | Ir. Nat. | Details... |
| Greer, T. | 1921 | Argynnis aglaia in Co. Tyrone | Journal | Ir. Nat. | Details... |
| Greer, T. | 1921 | Oxigrapha literana in north of Ireland | Journal | Ent. | Details... |
| Greer, T. | 1921 | Pyrameis cardui and P. atalanta in east Tyrone | Journal | Ent. | Details... |
1515 references found.