@book{16821,
	author = {Gielen, J.J. and Strasser, Stephan,},
	title = {Grondbeginselen ener opvoedkunde :},
	publisher = {Malmberg,},
	year = {1958},
	series = {Pedagogiek en psychologie voor kweekscholen ;},
	address = {'s-Hertogenbosch :},
	edition = {4de druk},
	note = {Including:  "Personenregister" p252-253
               "Zakenregister" p254-260}
}