@book {albers_heliceen_1850,
	title = {Die Heliceen nach nat{\"u}rlicher verwandschaft systematisch geordnet von Joh. Christ. Albers},
	year = {1850},
	publisher = {Enslin},
	organization = {Enslin},
	address = {Berlin},
	keywords = {naesiotusBYNAME},
	author = {Albers, JC}
}
@book {albers_heliceen_1860,
	title = {Die Heliceen nach nat{\"u}rlicher verwandschaft systematisch geordnet von Joh. Christ. Albers},
	year = {1860},
	publisher = {Engelmann},
	organization = {Engelmann},
	edition = {2e Ausgabe},
	address = {Leipzig},
	author = {Albers, JC}
}
