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Free Science Search Tools 七月 10, 2007

Posted by ginger in 网络花香.
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今天的Resource Shelf上列举了几个常用的免费科学搜索工具，即学术搜索引擎，虽然大部分都用过，还是放在这里吧：

Scirus

Microsoft Live Search Academic

The Scitopia portal

The Global Science Gateway

CiteSeer

OAISTER

Science.gov

PubMedCentral

National Science Digitial Library

Biomed Central

Directory of Open Access Journals

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