@book{54137,
	author = {Michalewsky, Nikolai von. and Visser, Ludwig,},
	title = {Harde grense /},
	publisher = {Tafelberg,},
	year = {1969.},
	address = {Kaapstad :},
	edition = {Afrikaanse uitg.},
	note = {Afrikaans translation from the German of: Harte Grenze. c1966.}
}