[prepared for] seventh annual field conference of the Great Lakes Section--Society of Economic Paleontologists and Mineralogists, October 1-2, 1977 ; edited by John K. Pope and Wayne D. Martin ; sponsor, Department of Geology, Miami University
[prepared for] seventh annual field conference of the Great Lakes Section--Society of Economic Paleontologists and Mineralogists, October 1-2, 1977 ; edited by John K. Pope and Wayne D. Martin ; sponsor, Department of Geology, Miami University