1. The nature of the stratigraphical record;Ager,1973
2. The Jurassic Period in Wales;Ager,1974
3. Pre-Pickwell Down age of the Plateau Beds (Upper Devonian) in South Wales;Allen;Nature,1964
4. Upper Old Red Sandstone (Farlovian) paleogeography in South Wales and the Welsh Borderland;Allen;J. sedim. Petrol.,1965
5. The Devonian rocks of Wales and the Welsh Borderlands;Allen,1974