http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f8-subject=Geology, Statigraphic -- Silurian) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f8-subject%3DGeology,%20Statigraphic%20--%20Silurian Results for your query: docsPerPage=100;f8-subject=Geology, Statigraphic -- Silurian Thu, 01 Jan 1970 12:00:00 GMT Oil and gas in Ohio, 1954. Alkire, Robert L. (Robert Leo), 1910-, Floto, Bernard A., 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