1. Veld types of South Africa;Acocks;Mem. bot. Surv. S. Afr.,1953
2. The vegetation of South Africa;Adamson,1938
3. The physiognomic approach;Beard,1973
4. Plant forms and their evolution in South Africa;Bews,1925
5. Periodicity in fynbos of the non-seasonal rainfall belt;Bond;Jl S. Afr. Bot.,1980