http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f4-subject=Geology -- Ohio -- Columbiana County) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f4-subject%3DGeology%20--%20Ohio%20--%20Columbiana%20County Results for your query: docsPerPage=100;f4-subject=Geology -- Ohio -- Columbiana County Thu, 01 Jan 1970 12:00:00 GMT Columbiana County, Ohio: its geological structure. Whittlesey, Charles, 1808-1886 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 Sand and gravel resources of Columbiana County, Ohio. Risser, Michele L., Ohio Division of Geological Survey. 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 General geology of the counties of Columbiana, Stark and Tuscarawas. Whittlesey, Charles, 1808-1886 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