----- 主题特定的互联网研究
This second, completely revised edition provides approximately 300 links to sources on the Internet, most of which are free. Of these links, about 200 are described in detail, divided in the individual subjects of the Dewey decimal classification system. Subject gateways - mainly in German and English - are listed, along with lexica, bibliographies and databases. Knowledge of subject-specific websites can facilitate reliable information retrieval.
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