http://www.rssboard.org/rss-specification 720 XTF Search Results (f2-format=Book;f3-subject=Aeronautics;f4-subject=Flying machines) http://catalog.wrhs.org/collections/search?f2-format%3DBook;f3-subject%3DAeronautics;f4-subject%3DFlying%20machines Results for your query: f2-format=Book;f3-subject=Aeronautics;f4-subject=Flying machines Thu, 01 Jan 1970 12:00:00 GMT Flying machines today. Ennis, William D. (William Duane), b. 1877 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 Model balloons and flying machines: with a short account of the progress of aviation. Alexander, John Henry. 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