1. An Introduction to Palaeobotany;Arnold,1977
2. Evolution and Plants of the Past;Banks,1970
3. An Introduction to Marine Ecology;Barnes,1982
4. Example of cratonic sedimentation: Lower Palaeozoic of the Algerian Sahara;Bennaceuf;Bulletin of the American Association of Petroleum Geologists,1971
5. Cretaceous cooling: fact or wishful thinking?;Bennett;Terra Nova,1996