@article{167384, author = {Spirakis, Charles S.}, url = {http://library.usi.edu/record/167384}, title = {Problems with applying topographically driven flow to genesis of the Upper Mississippi Valley zinc-lead district and to fluid flow in the Illinois Basin /}, publisher = {U.S. G.P.O. :}, recid = {167384}, pages = {iii, 12 p. :}, address = {Washington :}, year = {1995}, }