http://www.rssboard.org/rss-specification 720 XTF Search Results (f3-subject=Periodicals;f4-subject=Aeronautics) http://catalog.wrhs.org/collections/search?f3-subject%3DPeriodicals;f4-subject%3DAeronautics Results for your query: f3-subject=Periodicals;f4-subject=Aeronautics Thu, 01 Jan 1970 12:00:00 GMT Aviation (Aviation Publishing Corp.). 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