@book {627,
	title = {Monographia Pneumonopomorum viventium sistens Descriptiones Systematicas et Criticas omnium hujus ordinis generum et specierum hodie cognitarum, Accedente Fossilium Enumeratione},
	year = {1852},
	pages = {439},
	publisher = {Cassellis},
	organization = {Cassellis},
	url = {http://www.biodiversitylibrary.org/item/41669$\#$86},
	author = {L. Pfeiffer}
}
