@book {Jeffrey2010,
	title = {European atlas of soil biodiversity},
	year = {2010},
	isbn = {9789279158063},
	url = {http://eusoils.jrc.ec.europa.eu/library/maps/biodiversity_atlas},
	author = {Jeffrey, S and Gardi, C and Jones, A and Montanarella, L and Jeffery, S}
}
