@book{528398,
	author = {Metzler, Helmut  and Friedrich-Schiller-Universität Jena},
	title = {Friedrich Ludwig Gottlob Frege :},
	publisher = {Friedrich-Schiller-Universität,},
	year = {1976.},
	series = {Wissenschaftliche Beiträge der Friedrich-Schiller-Universität Jena},
	address = {Jena :},
	note = {Papers presented at a colloquium.}
}