@inbook{NBERc4706,
 Crossref = "NBERbore54-1",
 title = "The Growth Record of the United States Mining Industries, 1870-1948",
 author = "Israel Borenstein",
 BookTitle = "Capital and Output Trends in Mining Industries, 1870-1948",
 Publisher = "NBER",
 pages = "10-28",
 year = "1954",
 URL = "http://www.nber.org/chapters/c4706",
}
@book{NBERbore54-1,
 title = "Capital and Output Trends in Mining Industries, 1870-1948",
 author = "Israel Borenstein",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "NBER",
 year = "1954",
 URL = "http://www.nber.org/books/bore54-1",
}