@article{175640, author = {Larson, David R.}, url = {http://library.usi.edu/record/175640}, title = {Hydrogeology of the Green River Lowland and associated bedrock valleys in Northwestern Illinois /}, publisher = {Illinois State Geological Survey,}, recid = {175640}, pages = {20 p., 3 folded leaves of plates :}, address = {Champaign, IL :}, year = {1995}, }