Search Results       Your search for [subject]Twins -- Education -- Econometric models returned 1 record.           Double trouble on the value of twins-based estimation of the return to schooling. by Bound, John.; Cambridge: National Bureau of Economic Research, 1998. Subject: Twins -- Education -- Econometric models; Wages -- Effect of education on -- Econometric models.          Add to Book Cart Relevance: 25.85%