@book{5997,
	author = {Kuehnel, Johannes, and Impe, A. van,},
	title = {Levend rekenonderwijs.},
	publisher = {De Sikkel,},
	year = {1941.},
	series = {Brochurenreeks van de Vlamse Opvoedkundige Vereniging},
	address = {Antwerpen,}
}