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1
Published 1984
American Chemical Society
Subjects: ...North Dakota...

2
Published 1997
American Chemical Society
Subjects: ...Lakes / Analysis / North America...

3
Published 1986
American Chemical Society
Subjects: ...Geology, Stratigraphic / Cretaceous / North America...

4
Published 1987
American Chemical Society
Subjects: ...North Slope (Alaska)...

5
Published 1989
American Chemical Society