@techreport{NBERw13139,
 title = "Good Jobs, Bad Jobs, and Trade Liberalization",
 author = "Donald R. Davis and James Harrigan",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "13139",
 year = "2007",
 month = "May",
 URL = "http://www.nber.org/papers/w13139",
}