http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f277-subject=Naval aviation) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f277-subject%3DNaval%20aviation Results for your query: docsPerPage=100;f277-subject=Naval aviation Thu, 01 Jan 1970 12:00:00 GMT Air navigation notebook: preflight primary. United States Office of the Chief of Naval Operations. Aviation Training Division. 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