@book {870,
	title = {Die Landschnecken Nord- und Mitteleuropas},
	year = {1983},
	publisher = {Ein Bestimmungsbuch fur Biologen und Naturfreunde},
	organization = {Ein Bestimmungsbuch fur Biologen und Naturfreunde},
	address = {Berlin.},
	author = {Kerney, MP and Cameron, RAD and Jungbluth, J.H.}
}
