Objective To investigate the epidemical range, the distribution features and the state of endemic arsenism in Ying County.
目的查清应县地方性砷中毒病区的流行范围、分布特征和危害程度。
Objective To investigate the epidemical range, the distribution features and the state of endemic arsenism in Ying County.
目的查清应县地方性砷中毒病区的流行范围、分布特征和危害程度。
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