Mikrocensus 1986, 1. quarter: Extended Housing Survey, Additional Afterward-I...

The special survey in March is on the topic of extended housing survey ("Erweiterte Wohnungserhebung"), just as in the previous years (Mikrozensus MZ8501, Mikrozensus MZ8401,...3月开展的专项调查主题为扩展住房调查（Erweiterte Wohnungserhebung），与往年的Mikrozensus MZ8501、Mikrozensus MZ8401等调查项目一致。