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Author - title
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| original | Nd | England(Durham) | Raistrick,A. et al. The microspores of some Northumberland Coals, and their use in the correlation of coal-seams. | 1933 | |
| original | Late Devonian | Scotland(Orkney) | Lang,W.H. Contributions to the study of the Old Red Sand Stone flora of Scotland. 1.On plant remains from the Fish Beds of Cromarty. 2.On a Sporangium-Bearing Branch system from the Stromnss Beds | 1925 |