Labor mobility and economic opportunity / essays by E.W.Bakke and others. Sponsored by the Committee on Labor Market Research of the Social Science Research Council. Bakke, Edward Wight. Labor mobility United States. 331 LAB Includes index. Camb., Mass. : Technology Press of M.I.T., N.Y. : Wiley. 1954 ; 1954 ; 1954 Text 118 p. ; eng United States.