Stratigraphy and paleontology of Mid-Cretaceous rocks in Minnesota and contiguous areas - Cobban, William A.; Merewether, Edward A. (United States Government Printing Office, 1983)
MT
Enth.: 1: Molluscan fossil record from the northeastern part of the Upper Cretaceous seaway, western interior / Cobban, William A[ubrey]
Enth.: 2: Lower Upper Cretaceous strata in Minnesota and adjacent areas : time-stratigraphic correlations and structural attitudes / Merewether, E[dward] A[llen]