1. Llandovery conodonts from the Welsh Borderland;Aldridge;Bull. Br. Mus. nat. Hist.,1972
2. Local variations in the distribution of Silurian conodonts: an example from the amorphognathoides interval of the Welsh Basin;Aldridge,1981
3. The highest Lower Old Red Sandstone of Brown Clee Hill, Shropshire;Allen;Proc. Geol. Ass.,1961
4. Petrology, origin and deposition of the highest Lower Old Red Sandstone of Shropshire, England;Allen;J. Sed. Petrol.,1962
5. Sedimentology of the Old Red Sandstone (Siluro-Devonian) in the Clee Hills area, Shropshire;Allen;Sed. Geol.,1974