Annual report for the Bureau of Economic Geology 1997
Annual report for the Bureau of Economic Geology 1996
Annual report for the Bureau of Economic Geology 1995
Annual report for the Bureau of Economic Geology 1994
Annual report for the Bureau of Economic Geology 1993
Annual report for the Bureau of Economic Geology 1992
This large, 4-sheet geologic map displays more than 350 lithostratigraphic units ranging in age from Precambrian to Quaternary.
Annual report for the Bureau of Economic Geology 1991