http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f277-subject=Geology -- Ohio River Valley) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f277-subject%3DGeology%20--%20Ohio%20River%20Valley Results for your query: docsPerPage=100;f277-subject=Geology -- Ohio River Valley Thu, 01 Jan 1970 12:00:00 GMT The evolution of the Ohio River. Fowke, Gerard, 1855-1933 https://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc https://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT Drainage modifications in southeastern Ohio and adjacent parts of West Virginia and Kentucky: by W.G. Tight. Tight, William George, 1865- https://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc https://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT Observations on the saliferous rock formation, in the valley of the Ohio. Hildreth, Samuel P. (Samuel Prescott), 1783-1863 https://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc https://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT