1. Bibliography and subject index of South African geology Author/Creator: Geological Survey (South Africa) Publication/Creation: Pretoria : Govt. Printer Resource Type: Journal, Newspaper or Serial Access & Availability: Loading
2. Geological map of the Union of South Africa = Geologiese kaart van die Unie van Suid Afrika Author/Creator: Geological Survey (South Africa) Publication/Creation: Pretoria : Geological Survey Office, 1925 Resource Type: Map Access & Availability: Loading