http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f16-subject=Polar regions -- Aerial exploration) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f16-subject%3DPolar%20regions%20--%20Aerial%20exploration Results for your query: docsPerPage=100;f16-subject=Polar regions -- Aerial exploration Thu, 01 Jan 1970 12:00:00 GMT Polar aviation. Glines, Carroll V., 1920-2016 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 The aerial age: a thousand miles by airship over the Atlantic Ocean : airship voyages over the Polar Sea : the past, the present and the future of aerial navigation. Wellman, Walter, 1858-1934 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