Order by Best Match A - Z Z - A Oldest Newest Go 1 publication found Series: Information Circular Authors: De Geoffroy, J. Filter Results Geochemical Prospecting by Spring Sampling in the Southwest Wisconsin Zinc Mining Area IC10 Geochemical Prospecting by Spring Sampling in the Southwest Wisconsin Zinc Mining Area De Geoffroy, J.; 1969 Report: 28 p. IC10-plate01 Geochemical Survey by Spring Sampling Method: Southwest Wisconsin Zinc-Lead Area, Grant, Iowa, and Lafayette Counties 1969 Map: 37.8 in x 24.5 in, scale 1:125,000
