@book {9783818610678, 
	title = "Kräuterbestimmungsschlüssel für die häufigsten Grünland- und Rasenkräuter",
	author = "Klapp, Ernst AND Elsäßer, Martin AND Boberfeld, Wilhelm Opitz von",
	isbn = "9783818610678",
	edition = "5",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783818610678",
	url = "https://content-select.com/de/portal/media/view/5edf5aac-9670-466d-ab31-51e1b0dd2d03",
	publisher = "Verlag Eugen Ulmer",
	language = "ger",
}