Introduction to "Annals of Economic and Social Measurement, Volume 5, number 4"
Published Date
Copyright 1976
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Copy CitationJames J. Heckman, Annals of Economic and Social Measurement, Volume 5, number 4 (NBER, 1976), chap. 1, https://www.nber.org/books-and-chapters/annals-economic-and-social-measurement-volume-5-number-4/introduction-annals-economic-and-social-measurement-volume-5-number-4.