TY - BOOK ID - 135682433 TI - Changes in stratigraphic nomenclature by the U.S. Geological Survey, 1979 AU - Sohl, Norman F. AU - Wright, W. B. PY - 1980 PB - Washington United States Geological Survey, Department of the Interior DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:135682433 AB - ER -