@inbook{NBERc3416,
 Crossref = "NBERkrav71-1",
 title = "APPENDIX G INDEXES FROM U.S. EXPORT UNIT VALUE DATA ",
 author = "Irving B. Kravis and Robert E. Lipsey",
 BookTitle = "Price Competitiveness in World Trade",
 Publisher = "UMI",
 pages = "724-726",
 year = "1971",
 URL = "http://www.nber.org/chapters/c3416",
}
@book{NBERkrav71-1,
 title = "Price Competitiveness in World Trade",
 author = "Irving B. Kravis and Robert E. Lipsey",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "UMI",
 year = "1971",
 URL = "http://www.nber.org/books/krav71-1",
}