@book {9783818613327, 
	title = "Der Werker. Grundlagen Gartenbau",
	author = "Grieb, Ortrud",
	isbn = "9783818613327",
	edition = "3",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783818613327",
	url = "https://content-select.com/de/portal/media/view/5fff1b46-96c8-4803-a4e8-678cb0dd2d03",
	publisher = "Verlag Eugen Ulmer",
	language = "ger",
}