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Precambrian Petroleum Potential along the Midcontinent Trend
Companion volume to Geoscience Wisconsin, vol. 11. Prepared for 16th Annual Field Conference Great Lakes Section Society of Economic Paleontologists and Mineralogists. -
Three Billion Years of Geology
Prepared for 47th Annual Tri-State Geology Conference, Black River Falls, Wisconsin. -
Upper Mississippi Valley Base-Metal District
Companion volume to Information Circular 16 (third edition). Prepared for 24th Annual Meeting, Institute on Lake Superior Geology.