@book{29937,
	author = {Coertze, F. J. and Schumann, F. W.,},
	title = {The basic portion and associated minerals of the Bushveld igneous complex north of Pilanesberg,},
	publisher = {Govt. Printer,},
	year = {1962.},
	series = {South Africa. Geological Survey. Bulletin},
	address = {Pretoria,},
	note = {Summary in Afrikaans.}
}