@book {9783800196968, 
	title = "300 Ziervögel",
	author = "Bielfeld, Horst",
	isbn = "9783800196968",
	keywords = "Vögel",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783800196968",
	url = "https://content-select.com/de/portal/media/view/519cc6db-d90c-44df-9ff9-29115dbbeaba",
	publisher = "Verlag Eugen Ulmer",
	language = "ger",
}