10027/16087 Zakia Ahmad. Mishal Zakia Ahmad. Mishal Employment subcenters in a polycentric urban area: The case of Chicago. University of Illinois at Chicago 2014 Economics, General. 2014-03-18 00:00:00 Thesis https://indigo.uic.edu/articles/thesis/Employment_subcenters_in_a_polycentric_urban_area_The_case_of_Chicago_/10785518 Employment subcenters in a polycentric urban area: The case of Chicago.