@book{24207,
	author = {Greeff, Oppel B. W. and Visser, Martie J. and Suid-Afrikaanse Noodhulpliga.},
	title = {Gevorderde noodhulp /},
	publisher = {Suid-Afrikaanse Noodhulpliga,},
	year = {1980.},
	address = {Randburg :}
}