ONU. (1971). Metodology of demographic sample surveys. report of the interregional workshop on methodology of demographic sample surveys (24-3: Sep-oct 1969 : copenhagen, denmark).
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Cita estilo Chicago (17a ed.)
ONU. Metodology of Demographic Sample Surveys. Report of the Interregional Workshop on Methodology of Demographic Sample Surveys (24-3: Sep-oct 1969 : Copenhagen, Denmark). 1971.
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Cita MLA (9a ed.)
ONU. Metodology of Demographic Sample Surveys. Report of the Interregional Workshop on Methodology of Demographic Sample Surveys (24-3: Sep-oct 1969 : Copenhagen, Denmark). 1971.
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