@techreport{NBERr2092,
 title = "The Private and Social Returns to Research and Development",
 author = "Bronwyn H. Hall",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Reprint Series",
 number = "2092",
 year = "1996",
 month = "November",
 URL = "http://www.nber.org/papers/r2092",
 abstract = {},
}