title: [The World Fertility Survey:  a global demographic research project.  Part 1:  tasks and approaches of the WFS].
authors.forename: I
authors.initials: I
authors.lastname: Esenwein-rothe
mesh_terms: D001723:Birth Rate; D003625:Data Collection; D003710:Demography; D005298:Fertility; D011153:Population; D011157:Population Dynamics; D012106:Research; D012494:Sampling Studies; D011795:Surveys and Questionnaires
keywords: Demographic Factors; Fertility; Fertility Measurements; Fertility Surveys; Population; Population Dynamics; Questionnaire Design; Research Methodology; Sampling Studies; Studies; Study Design; Survey Methodology; Surveys; World; World Fertility Surveys