@book{29961,
	author = {Heystek, H.},
	title = {The kaolin deposits of the area between Bitterfontein and Landplaas, Vanrhynsdorp District,},
	publisher = {Govt. Printer,},
	year = {1961.},
	series = {Geological Survey (South Africa). Bulletin},
	address = {Pretoria,},
	note = {Summary in Afrikaans.}
}