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Abstract
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Keywords:
Age DistributionAge FactorsAmericasDemographic FactorsDemographyDeveloped CountriesEducationEstimation TechnicsFertilityFertility MeasurementsNet Reproduction RateNorth AmericaNorthern AmericaPopulationPopulation CharacteristicsPopulation DynamicsPopulation Growth EstimationPopulation Growth--historyResearch MethodologySex DistributionSex FactorsUnited States