1. Introducing Geology;Ager,1961
2. Principles of Paleoecology;Ager,1963
3. The adaptation of Mesozoic brachiopods to different environments;Ager;Palaeogeog., Palaeoclimat., Palaeoecol.,1965
4. Brachiopod palaeoecology;Ager;Earth Sci. Rev.,1967
5. The Famennian takeover;Ager,1968