@book{29662,
	author = {De Jager, D. H. and Von Backström, J. W.,},
	title = {The sillimanite deposits in Namaqualand near Pofadder,},
	publisher = {Govt. Printer,},
	year = {1961.},
	series = {Geological Survey (South Africa). Bulletin},
	address = {Pretoria,},
	note = {Summary in Afrikaans.}
}