{"title":"[[The system of the demography of the aged]].","authors":"Q Xu","doi":"","DOIUrl":null,"url":null,"abstract":"","PeriodicalId":70862,"journal":{"name":"人口研究","volume":" 1","pages":"23-8"},"PeriodicalIF":0.0000,"publicationDate":"1988-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"人口研究","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}