title: Initial study of sex-age structure of the 1990 census.
authors.forename: X
authors.initials: X
authors.lastname: Qiao
mesh_terms: D017677:Age Distribution; D000367:Age Factors; D001208:Asia; D002681:China; D015331:Cohort Studies; D003625:Data Collection; D003710:Demography; D003906:Developing Countries; D005202:Asia, Eastern; D011153:Population; D011154:Population Characteristics; D015203:Reproducibility of Results; D012106:Research; D012107:Research Design; D017678:Sex Distribution; D012737:Sex Factors
keywords: Age Distribution; Age Factors; Asia; China; Cohort Analysis; Data Collection; Data Reporting; Demographic Analysis; Demographic Factors; Developing Countries; Eastern Asia; Measurement; Population; Population Characteristics; Reliability; Research Methodology; Sex Distribution; Sex Factors