Title
Geochemical baseline studies and relations between water quality and streamflow in the Upper Blackfoot River Watershed, Montana [microform] : progress report for July 1997 - March 1998 / by Sonia A. Nagorski ... [et al.].
Published
[Denver, CO] : U.S. Dept. of the Interior, U.S. Geological Survey : [Books and Open-file Reports Section, distributor, 1998]