@article { Mai1989,
title = {Umweltpolitik },
author = {Mai, Manfred },
journal = {Sozialwissenschaften und Berufspraxis },
number = {1 },
pages = {90-93 },
volume = {12 },
year = {1989 },
url = {http://nbn-resolving.de/urn:nbn:de:0168-ssoar-39524 },
}