1. Abdel-Gawad, M. 1969. New evidence of transcurrent movements in Red Sea area and petroleum indications. Amer. Assoc. Petrol. Geol. Bull. 53:1466–1499.
2. Acocks, J. P. H. 1953. Veld types of South Africa. Mem. Bot. Surv. S. Afr. 28:1–192.
3. Adamson, R. S. 1931. Notes on some petrified wood from Banke, Namaqualand. Trans. Roy. Soc. S. Afr. 19:255–258.
4. Adamson, R. S. 1934. Fossil plants from Fort Grey, near East London. South Afr. Mus. Ann. 31:67–96.
5. Adamson, R. S. 1938. Notes on the vegetation of the Kamiesberg. Mem. Bot. Surv. S. Afr. 18:1–25.