@article{155089, recid = {155089}, author = {Mikulic, Donald G.}, title = {Cross section of the Paleozoic rocks of northeastern Illinois : implications for subsurface aggregate mining /}, publisher = {Illinois State Geological Survey,}, address = {Champaign, Ill. (615 E. Peabody Dr., Champaign 61801) :}, pages = {14 p. :}, year = {1990}, url = {http://library.usi.edu/record/155089}, }