Climate change and its impact on birch pollen quantities and the start of the pollen season an example from Switzerland for the period 1969–2006 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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Climate change and its impact on birch pollen quantities and the start of the pollen season an example from Switzerland for the period 1969–2006

作者姓名：	Frei T Gassner E

摘要：
收稿时间：	17 December 2007
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