1. Notes on the mineralogy and origin of glauconite;Bentor;J. Sediment. Petrol.,1965
2. The glauconite deposits on the Agulhas Bank, South Africa;Birch,1971
3. Sediments on the Continental Margin off the West Coast of South Africa;Birch,1975
4. Electron microprobe studies of marine glauconite and phosphorite;Birch,1974
5. Birch, G.F., in prep. Age and diagenetic development of glauconite from the west coast off South Africa.