@article{155014, author = {Bhagwat, Subhash. and Berg, Richard C.}, url = {http://library.usi.edu/record/155014}, title = {Benefits and costs of geologic mapping programs in Illinois : case study of Boone and Winnebago Counties and its statewide applicability /}, publisher = {Illinois State Geological Survey,}, recid = {155014}, pages = {40 p. :}, address = {Champaign, Ill. (Natural Resources Bldg., 615, E. Peabody Dr., Champaign 61820) :}, year = {1991}, }