Presented by Don Johnson, Emeritus Professor of Geography and Geographic Information Science at the University of Illinois Department of Geography and Geographic Information Science.
PRAIRIE RESEARCH INSTITUTE
615 E. Peabody Drive, MC-650
Champaign, IL 61820
Email the Web Administrator with questions or comments.
© 2016 University of Illinois Board of Trustees. All rights reserved.
For permissions information, contact the Prairie Research Institute.