Effective Protection and the Distribution of Personal Income by Sector in Colombia

T. Paul Schultz, Trade and Employment in Developing Countries, Volume 2: Factor Supply and Substitution (University of Chicago Press, 1982), chap. 2, https://www.nber.org/books-and-chapters/trade-and-employment-developing-countries-volume-2-factor-supply-and-substitution/effective-protection-and-distribution-personal-income-sector-colombia.