@book{16918,
	author = {Olivier, G.},
	title = {10 weke roete na N4 wiskunde.},
	publisher = {G. Olivier,},
	year = {1980.},
	series = {10 weke reeks =},
	address = {Pretoria (PO Box 48122, Hercules, Pretoria 0030) :}
}