Mikrocensus 1974, 1. quarter: Extended Housing Survey

The special survey in March is on the topic of extended housing survey ("Erweiterte Wohnungserhebung"), just as in the previous year (Mikrozensus MZ7301, Mikrozensus MZ7201,...本次三月开展的专项调查主题为拓展型住房调查（Erweiterte Wohnungserhebung），与上一年度的调查（微型普查Mikrozensus MZ7301、Mikrozensus MZ7201……）相一致。