@book {660,
	title = {Novitates conchologicae. Series prima. Mollusca extramarina. Beschreiber und Abbildung, neuer oder kritischer Land-und S{\"u}sswasser-Mollusken},
	volume = {3},
	year = {1868},
	pages = {301-510},
	url = {http://www.biodiversitylibrary.org/item/41218$\#$10},
	author = {L. Pfeiffer}
}
@book {660,
	title = {Novitates conchologicae. Series prima. Mollusca extramarina. Beschreiber und Abbildung, neuer oder kritischer Land-und S{\"u}sswasser-Mollusken},
	volume = {3},
	year = {1867},
	pages = {210},
	url = {http://www.biodiversitylibrary.org/item/41218},
	author = {L. Pfeiffer}
}
