@book{85912,
	author = {Levy, René, and Pro Helvetia (Foundation)},
	title = {Die schweizerische Sozialstruktur /},
	publisher = {Pro Helvetia, Dokumentation-Information-Presse,},
	year = {1997,1989, c1982.},
	address = {Zürich :},
	edition = {4. Aufl.},
	note = {Three maps on one leaf inserted.}
}