![CORRELATION OF THE ORDOVICIAN FORMATIONS OF NORTH AMERICA]()
CORRELATION OF THE ORDOVICIAN FORMATIONS OF NORTH AMERICATWEHHOFEL, W. H.; BRIDGE, JOSIAH; CLOUD, PRESTON E.; COOPER, BYRON N.; ARTHUR COOPER, G.; CUMINGS, E. R.; CULLISON, JAMES S.; DUNBAR, CARL O.; KAY, MARSHALL; LIBERTY, BRUCE A.; MCFARLAN, A. C.; RODGERS, JOHN; WHITTINGTON, H. B.; WILSON, ALICE E.; WILSON, CHARLES W. · Geological Society of America Bulletin · 1954