@book{193347,
	author = {Bretschneider, Jan},
	title = {Weltanschaulich-philosophische Probleme der Biologie :},
	publisher = {Universitätsbibliothek der Friedrich-Schiller-Universität,},
	year = {1980.},
	address = {Jena :},
	note = {Errata slip inserted.}
}