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Warc.com is an online service offering advertising best practice, evidence and insights from the world's leading brands. Warc helps clients grow their businesses by using proven approaches to maximise advertising effectiveness.
Communication & Mass Media Complete (CMMC) offers full text and cover-to-cover indexing and abstracts for journals covering communication, mass media, linguistics, rhetoric, language, logic, and other closely related fields.
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For example: Enter: "case study" AND "social media"