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Education and economic growth : the next steps
Keller, Robert J., (1965)
The economics of vocational and technical education : a report on three studies
Ghazalah, I. A., (1973)
Costs and returns for investments in technical schooling by a group of North Carolina High School graduates
Carroll, Adger B., (1968)
Determinants of annual earnings of graduates of the Wisconcin system of Vocational, Technical and Adult Education
Nowrasteh, Daryush Mohammadreza, (1974)