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This document outlines several online reference tools including dictionaries, thesauruses, concordances, corpora, translators, and encyclopedias. It notes that dictionaries come in bilingual and monolingual forms as well as electronic versions. Thesauruses are useful for advanced levels and writing. Concordances and corpora function similarly to search engines and provide grammar references. Translators require caution due to accuracy issues, and encyclopedias need consideration of level, vocabulary, and structure.Read less