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Derwent Innovations Index facilitates rapid, precise patent searching, letting you conduct patent and citation searches of inventions in chemical, electrical, electronic, and mechanical engineering. 

Searching Web of Science will automatically search the contents of this database.

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This Text Revision incorporates information culled from a comprehensive literature review of research about mental disorders published since DSM-IV was completed in 1994. Updated information is included about the associated features, culture, age, and gender features, prevalence, course, and familial pattern of mental disorders.

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DARE is a multi-volume reference work that documents words, phrases, and pronunciations that vary from one place to another place across the United States. The digital version transforms the dictionary into an interactive, multimedia tool that benefits scholarly inquiry and general curiosity.

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Dictionary of Literary Biography Complete Online provides authoritative information about authors from all time periods and from all parts of the world while placing them in the larger perspective of literary history.

This online set provides access to all volumes of the Dictionary of Literary Biography series, the Dictionary of Literary Biography Documentary Series, and the Dictionary of Literary Biography Yearbook.

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Directory of Open Access Journals (DOAJ) is a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals covering all areas of science, technology, medicine, social science and humanities.

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