Illinois GIS & mapnotes.
APA Citation
Northern Illinois University. Center for Governmental Studies. (19891999). Illinois GIS & mapnotes. DeKalb, Ill.: Center for Governmental Studies, Northern Illinois University.
MLA Citation
Northern Illinois University. Center for Governmental Studies. Illinois GIS & Mapnotes. DeKalb, Ill.: Center for Governmental Studies, Northern Illinois University, 19891999.
Warning: These citations may not always be complete (especially for serials).