搜索结果: 1-1 共查到“人口社会学 famine”相关记录1条 . 查询时间(0.093 秒)
Could changes in reported sex ratios at birth during China's 1958-1961 famine support the adaptive sex ratio adjustment hypothesis?
China famine sex ratio at birth
2014/11/25
Background: The adaptive sex ratio adjustment hypothesis suggests that when mothers are in poor conditions the sex ratio of their offspring will be biased towards females. Major famines provide opport...