Urban structure and the labour market : worker mobility, commuting, and underemployment in cities / Wayne Simpson. Simpson, Wayne. Labor mobility. Urban economics. Underemployment. Commuting. HD5717 .S56 1992 331.12091732 20 SIU Includes bibliographical references (p. [183]-195) and index. Oxford : Clarendon Press ; New York : Oxford University Press, 1992. 1992. 1992 Text x, 198 p. ; http://www.loc.gov/catdir/enhancements/fy0635/91032146-d.html eng