United States. National Institute of Child Health and Human Development. Scientific Information Centers Branch. (1967). Population research.
Chicago-viite (17. p.)United States. National Institute of Child Health and Human Development. Scientific Information Centers Branch. Population Research. U. S. Department of Health, Education, and Welfare, 1967.
MLA-viite (9. p.)United States. National Institute of Child Health and Human Development. Scientific Information Centers Branch. Population Research. 1967.
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