title: On future population.
authors.forename: N
authors.initials: N
authors.lastname: Keyfitz
mesh_terms: D001723:Birth Rate; D015331:Cohort Studies; D008423:Maternal Age; D008962:Models, Theoretical; D009026:Mortality; D011158:Population Growth; D015203:Reproducibility of Results; D012106:Research; D012107:Research Design; D013223:Statistics as Topic; D014481:United States
keywords: Age Specific Death Rate; Age Specific Fertility Rate; Birth Rate; Cohort Analysis; Error Sources; Estimation Technics; Measurement; Models, Theoretical; Mortality; Population Growth Estimation; Reliability; Research Methodology; Research Report; United States