http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f277-subject=Gravity -- Ohio) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f277-subject%3DGravity%20--%20Ohio Results for your query: docsPerPage=100;f277-subject=Gravity -- Ohio Thu, 01 Jan 1970 12:00:00 GMT Gravity survey of the State of Ohio. Heiskanen, Weikko A. (Weikko Aleksanteri), 1895-1971, Uotila, U. A., Ohio Division of Geological Survey., Ohio State University Institute of Geodesy, Photogrammetry and Cartography. 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