Time required for the erosion of Clifty and Butler ravines
By: by Glenn Culbertson and J. Archer Culbertson ; with introduction and commentary by Henry H. Gray.
Contributors: Culbertson, J. Archer.; Gray, Henry Hamilton, 1922-; Indiana. Geological Survey.
Series: Geological Survey occasional paper -- 44
Publisher: Indiana Geological Survey
Published: 1984
Place of publication: Bloomington, Ind
Language: eng
Subjects: Erosion -- Indiana -- Jefferson County