@book{84,
	author = {Schröck, Joseph},
	title = {Maschinenschlosserei},
	publisher = {A. Ziemsen Verlag},
	year = {[1948]},
	series = {Deutsche Werkmeister-Bücherei},
	address = {Wittenberg/Lutherstadt},
	edition = {4., verbesserte Auflage}
}