http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f1-subject=Geology, Stratigraphic -- Ordovician;smode=advanced;subject=Geology -- Ohio;subject-join=exact) http://catalog.wrhs.org/collections/search?docsPerPage%3D100;f1-subject%3DGeology,%20Stratigraphic%20--%20Ordovician;smode%3Dadvanced;subject%3DGeology%20--%20Ohio;subject-join%3Dexact Results for your query: docsPerPage=100;f1-subject=Geology, Stratigraphic -- Ordovician;smode=advanced;subject=Geology -- Ohio;subject-join=exact Thu, 01 Jan 1970 12:00:00 GMT Chemical composition, stratigraphy, and depositional environments of the Black River Group (Middle Ordovician), southwestern Ohio. Stith, David A. http://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc http://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT Stratigraphy of the Cambrian and Lower Ordovician rocks in Ohio. Janssens, Adriaan. http://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc http://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT Supplemental core investigations for high-calcium limestones in western Ohio and discussion of natural gas and stratigraphic relationships in the Middle to Upper Ordovician rocks of southwestern Ohio. Stith, David A. http://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc http://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT Stratigraphy, structure, and production history of the Trenton Limestone (Ordovician) and adjacent strata in northwestern Ohio. Wickstrom, Lawrence H., Gray, John D., Stieglitz, Ronald D. http://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc http://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT