@book {9783818610517, 
	title = "Alte Obstsorten",
	author = "Hartmann, Walter",
	isbn = "9783818610517",
	edition = "6",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783818610517",
	url = "https://content-select.com/de/portal/media/view/5edf5a85-1d68-49a6-abbe-51e1b0dd2d03",
	publisher = "Verlag Eugen Ulmer",
	language = "ger",
}