To provide a forum for open discussion of research on Late Cambrian and Ordovician geology of the southern Midcontinent, the OGS sponsored this symposium October 18-19, 1989. The symposium was held at the Oklahoma Center for Continuing Education,...
A symposium entitled "Recent Advances in Middle Carboniferous Biostratigraphy" was held at Stillwater, Oklahoma, on March 5, 1990 , as part of the annual meeting of the South-Central Section, Geological Society of America.
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there are two issues labeled "Spring 1993"; sponsored jointly by the Federal Highway Administration, the Oklahoma Department of Transportation and the Oklahoma Commission on County Government Personnel, Education and Training