@inbook{NBERc10563,
 Crossref = "NBERunkn38-1",
 title = "The Correction of Wealth and Income Estimates for Price Changes",
 author = "M. A. Copeland and E. M. Martin",
 BookTitle = "Studies in Income and Wealth, Volume 2",
 Publisher = "NBER",
 pages = "83-134",
 year = "1938",
 URL = "http://www.nber.org/chapters/c10563",
}
@book{NBERunkn38-1,
 title = "Studies in Income and Wealth, Volume 2",
 author = "Conference on Research in National Income and Wealth",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "NBER",
 year = "1938",
 URL = "http://www.nber.org/books/unkn38-1",
}