TY - BOOK ID - 135269279 TI - Changes in stratigraphic nomenclature by the U.S. Geological Survey, 1976 AU - Sohl, Norman F. AU - Wright, Wilna B. PY - 1977 PB - Washington United States Geological Survey, Department of the Interior DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:135269279 AB - ER -