https://vital.seals.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 Reaction phenomena between Karroo Dolerite and cave sandstone xenoliths in the Bird's River complex https://vital.seals.ac.za/vital/access/manager/Repository/vital:4996 Wed 12 May 2021 19:49:04 SAST ]]> A contribution to the petrology of kimberlites https://vital.seals.ac.za/vital/access/manager/Repository/vital:5024 Thu 13 May 2021 08:49:11 SAST ]]>