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Google Scholar - http://scholar.google.com/
Provides a search of scholarly literature across many disciplines and sources, including theses, books, abstracts and articles. |
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All Academic - http://www.allacademic.com/
A searchable database of academic publications: journals, working papers, convention papers and magazine articles. Also has an A-Z list of links to online journals. |
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BASE: Bielefeld Academic Search Engine - http://www.base-search.net/
Searches scholarly internet resources from all academic disciplines. Provides a list of the sources indexed. |