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Abortion found three to five times safer if done earlier. 研究发现，如果及早堕胎，会安全三到五倍。
Population chronicle Pub Date : 1972-04-01
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引用次数: 0
Abortion rises 72 percent in six years in Korea. 韩国的堕胎率在6年内上升了72%。
Population chronicle Pub Date : 1971-09-01
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引用次数: 0
Voluntary sterilization becoming more popular as method of birth control. 自愿绝育作为控制生育的方法越来越受欢迎。
Population chronicle Pub Date : 1971-01-01
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引用次数: 0
Sterilization requests increasing in the U.S. 在美国，要求绝育的人越来越多
Population chronicle Pub Date : 1971-01-01
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引用次数: 0
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