TY - BOOK ID - 138993085 TI - Calloway Creek limestone and Ashlock and Drakes formations (Upper Ordovician) in south-central Kentucky AU - Weir, Gordon W. AU - Greene, Robert C. AU - Simmons, George Clarke AU - Geological Survey (U.S.) AU - Kentucky Geological Survey PY - 1965 PB - [Washington, D.C.] : Washington : United States Department of the Interior, Geological Survey, United States Government Printing Office. DB - UniCat KW - Geology, Stratigraphic KW - Limestone KW - From 425 to 500 million years ago KW - Kentucky. UR - https://www.unicat.be/uniCat?func=search&query=sysid:138993085 AB - ER -