@inbook{NBERc5259,
 Crossref = "NBERtaub72-1",
 title = "Conclusions",
 author = "Paul Taubman and Terence Wales",
 BookTitle = "Mental Ability and Higher Educational Attainment in the 20th Century",
 Publisher = "NBER",
 pages = "17-24",
 year = "1972",
 URL = "http://www.nber.org/chapters/c5259",
}
@book{NBERtaub72-1,
 title = "Mental Ability and Higher Educational Attainment in the 20th Century",
 author = "Paul Taubman and Terence Wales",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "NBER",
 year = "1972",
 URL = "http://www.nber.org/books/taub72-1",
}