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Chemical Abstracts

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【摘要】 <正>Chemical Abstracts ( CA) ,a reputable international search tool,which involves the widest disciplinary field,collects the most literature types,offers the most searching ways,and has the most prodigious volumes,is edited and published by CAS-Chemical Abstracts in the USA. CA has reported more than 10000 kinds of technology journals,technology reports, meeting papers,academic dissertations,data chronicles,technique reports,new books,and audiovisuals,which are pub

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