. . . . . . . . . . "The returns to education and training in the sub-baccalaureate labor market : evidence from the survey of income and program participation 1984-1990"@en . . . . . . . . "The returns to education and training in the sub-baccalaureate labor market evidence from the survey of income and program participation 1984-1990"@en . . . . . . . .