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Creator
Gehres, W. S. (Wilmer Sherman), 1887-1963
Remove constraint Creator: Gehres, W. S. (Wilmer Sherman), 1887-1963
Creator
Marshall, R. B. (Robert Bradford), 1867-1949
Remove constraint Creator: Marshall, R. B. (Robert Bradford), 1867-1949
Publisher
Geological Survey (U.S.)
Remove constraint Publisher: Geological Survey (U.S.)