ALLBUS / GGSS Cumulation 1980 - 2004 (ZA-Study-No 4243)", Electronic Codebook, integrated Data File, and Survey Description, Cologne: GESIS.
ALLBUS / GGSS Cumulation 1980 - 2004 (ZA-Study-No 4243)", Electronic Codebook, integrated Data File, and Survey Description, Cologne: GESIS.