@book {9783800190997, 
	title = "Das große Naturerlebnisbuch",
	author = "Hecker, Katrin AND Hecker, Frank",
	isbn = "9783800190997",
	keywords = "Natur und Reise",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783800190997",
	url = "https://content-select.com/de/portal/media/view/519cc709-6594-45bb-8dfe-29105dbbeaba",
	publisher = "Verlag Eugen Ulmer",
	language = "ger",
}