Biblio
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Author Title Type [ Year] Filters: Author is Cvancara, Alan M. [Clear All Filters]
Aquatic Mollusks of North Dakota: North Dakota Geological Survey Report of Investigations.
, 1983, Gastropoda from Pierre Shale (Upper Cretaceous) of Emmons County, south-central North Dakota: University of North Dakota.
, 1957, Gastropoda from Pierre Shale (Upper Cretaceous) of Emmons County, south-central North Dakota: University of North Dakota.
, 1957,