@techreport{NBERr0276, title = "Why Does the Rate of Youth Labor Force Activity Differ Across Surveys?", author = "Richard B. Freeman and James L. Medoff", institution = "National Bureau of Economic Research", type = "Working Paper", series = "Reprint Series", number = "276", year = "1982", month = "July", URL = "http://www.nber.org/papers/r0276", abstract = {}, }