Geohydrology, water levels and directions of flow, and occurrence of light-nonaqueous-phase liquids on ground water in northwestern Indiana and the Lake Calumet area of northeastern Illinois /
by Robert T. Kay ... [et al.] ; prepared in cooperation with the U.S. Environmental Protection Agency.

APA Citation

Kay, R. T., Geological Survey (U.S.)., United States. Environmental Protection Agency. (1996). Geohydrology, water levels and directions of flow, and occurrence of light-nonaqueous-phase liquids on ground water in northwestern Indiana and the Lake Calumet area of northeastern Illinois. De Kalb, Ill.: U.S. Dept. of the Interior, U.S. Geological Survey .

MLA Citation

Kay, Robert T, Geological Survey (U.S.), and United States. Environmental Protection Agency. Geohydrology, Water Levels And Directions of Flow, And Occurrence of Light-nonaqueous-phase Liquids On Ground Water In Northwestern Indiana And the Lake Calumet Area of Northeastern Illinois. De Kalb, Ill.: U.S. Dept. of the Interior, U.S. Geological Survey , 1996.