Mikrocensus 1998, 2. quarter: Elderly People
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In celebration of the International year of elderly people 1999 as well as by special request of the Federal Ministry for environment, youth and family this special survey...
为纪念1999年国际老年人年（International Year of Elderly People），同时应联邦环境、青年与家庭部（Federal Ministry for Environment, Youth and Family）的特别委托，本次专项调查……
