@book{2949,
	author = {Küppers, Horst  and Römling-Irek, Petra},
	title = {Die Auseinandersetzung mit der Welt :},
	publisher = {Bildungsverlag Eins,},
	year = {2011},
	address = {Köln :},
	url = {https://d-nb.info/1011499177/04}
}