The performance of performance standards:
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Bibliographic Details
Main Authors: Heckman, James J. 1944- (Author), Heinrich, Carolyn J. (Author), Smith, Jeffrey A. 1962- (Author)
Format: Book
Language:English
Published: Cambridge, Mass. NBER 2002
Edition:Revised
Series:Working paper series / National Bureau of Economic Research 9002
Links:http://papers.nber.org/papers/w9002.pdf
Physical Description:56 S. graph. Darst 22 cm