@incollection { Barth1969,
title = {Die Nationalit├Ąt in ihrer soziologischen Bedeutung },
author = {Barth, Paul },
pages = {21-48 },
year = {1969 },
publisher = {Sauer u. Auvermann },
url = {http://nbn-resolving.de/urn:nbn:de:0168-ssoar-187944 },
}