@article{20240, author = {McKay, E. Donald. and Elzeftawy, Atef. and Cartwright, Keros.}, url = {http://library.usi.edu/record/20240}, title = {Ground-water geology of selected wetlands in Union and Alexander Counties, Illinois /}, publisher = {Illinois State Geological Survey Division,}, recid = {20240}, pages = {41 p. :}, address = {Urbana :}, year = {1979}, }