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"The concept of segregation in U.S. neighborhoods has shifted from race-based separation to economic, a study of census data by Northwestern University revealed."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Top_News/US/2012/06/13/Segregation-in-US-economic-not-racial/UPI-29961339616847/?rel=66241341239235>