Influence of Birth Order and Maternal Age on the Human Sex Ratio at Birth

類似資料

• The Sex Ratio of Human Births related to Maternal Age
  著者:: Lowe, C. R., 等
  出版事項: (1950)
• Sex ratio of white births in the United States during the second world war
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  出版事項: (1954)
• Paternal-age and birth-order effect on the human secondary sex ratio.
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• Limited dependence of the human sex ratio on birth order and parental ages.
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  出版事項: (1971)
• Maternal age and birth order as indices of environmental influence
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