@book {410,
	title = {Monographie der Turbellarien. II. Tricladida Terricola (Landplanarien)},
	volume = {2},
	year = {1899},
	pages = {574},
	publisher = {Wilhelm Engelmann},
	organization = {Wilhelm Engelmann},
	address = {Leipzig},
	url = {http://edoc.hu-berlin.de/ebind/hdok/h07_turbellarien_2/XML/index.xml?part=thumb},
	author = {Graff, L. von}
}
