The timing of sexual maturation among boys and girls in eastern Poland, 1980–2000: A rural–urban comparison 期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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The timing of sexual maturation among boys and girls in eastern Poland, 1980–2000: A rural–urban comparison

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收稿时间：	3 December 2009
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