Steubing, W.C., 1912, Notes on the geology of Helvetia, Pima County, Arizona: New York, Columbia University, M.S. thesis. Authors Steubing, W.C. Publication Date 1912 Citation New York, Columbia University, M.S. thesis. State AZ Province BR County PM Placenames Santa Rita Mts. Keywords Areal Structure Stratigraphy More Keywords Areal, Structure, Stratigraphy, AzGeoBib RefNum 9699