@article{248568, author = {Berg, Richard C.}, url = {http://library.usi.edu/record/248568}, title = {Aquifer sensitivity classification for Illinois using depth to uppermost aquifer material and aquifer thickness /}, publisher = {Illinois State Geological Survey,}, recid = {248568}, pages = {14 p. :}, address = {Champaign, Ill. :}, year = {2001}, }