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2. Prejudice and science——Environmental tobacco smoke and health
工業(yè)科技

        By Gio Batta GoriThe Health Policy Center,Bethesda,Maryland,USAAbstractThe grounds for official policy claims that environmental tobaccosmoke is a major health risk remain speculative. In scientific terms,available reports suggest either a slight increase......(本文共 26018 字)     [閱讀本文] >>

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