Biodiversity Heritage Library
By "Elzeftawy, Atef. "
Ground-water geology of selected wetlands in Union and Alexander Counties, Illinois /
By: McKay, E. Donald. - Cartwright, Keros. - Elzeftawy, Atef.
Publication info: Urbana :Illinois State Geological Survey Division,1979.
Contributed by: University Library, University of Illinois Urbana Champaign