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搜索结果: 1-4 共查到Birth Control相关记录4条 . 查询时间(0.133 秒)
This paper investigates the effect of the supply of birth control methods on fertility behavior by examining Romania’s 23-year period of pronatalist policies. Following the lifting of the restrictions...
摘要 We consider optimal birth control for the McKendrick equation of population dynamics. It consists of optimizing a system described by a first order partial differential equationwith nonlocal biline...
January 23, 2007,Recent wire service stories about today's meeting of the FDA Reproductive Health Drugs Advisory Committee have created misperceptions about the effectiveness of newer generation hormo...
November 28, 2006,The proportion of U.S. teens who had received any formal instruction about birth control methods declined sharply between 1995 and 2002, while the proportion who had received only in...

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