00311nam a2200109Ia 4500008004100000020001800041082001900059100002100078245001900099260003600118440004700154190415s9999    xx            000 0 und d  a0-7619-7338-9  aRR 300.72 SOC-  ade Vaus, David/; 0aSocial surveys  aLondonbSage Publicationsc2002  aSage benchmarks in social research methods