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Plant microfossils of the Hazard No. 7 coal, Perry County, Kentucky
Robert M. Kosanke
1965, Open-File Report 65-89
The cooperative mapping program between the Kentucky Geological Survey and the U. S. Geological Survey has yielded a number of interesting and valuable by-products. As a part of the stratigraphic studies involving Carboniferous coal fields, R. M. Kosanke has been involved in a detailed analysis of spore floras from various...