TY - BOOK ID - 139178480 TI - The base of the Upper Keweenawan, Michigan and Wisconsin AU - White, Walter S. AU - Geological Survey (U.S.) PY - 1972 PB - [Washington, D.C.] : Washington : United States Department of the Interior, Geological Survey, United States Government Printing Office. DB - UniCat KW - Geology, Stratigraphic KW - Geology KW - Geology KW - From 570 million to 5 billion years ago KW - Michigan. KW - Wisconsin. UR - https://www.unicat.be/uniCat?func=search&query=sysid:139178480 AB - ER -