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15. Cox Enterprises
Cox Enterprises
2007 revenue: $15 billion
Fiscal year end: Dec. 31
2007 Employees: 82,000
Industry: Telecommunications
CEO: James C. Kennedy
Location: Atlanta, Ga

Through several subsidiaries, this diversified media company's operations include cable television, telephone and Internet distribution, newspapers and direct mail and auto auctions and services.

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Last updated May 28 2008: 12:40 PM ET
Includes Cox Radio, a publicly traded subsidiary.