http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f6-subject=Civil defense -- Minnesota) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f6-subject%3DCivil%20defense%20--%20Minnesota Results for your query: docsPerPage=100;f6-subject=Civil defense -- Minnesota Thu, 01 Jan 1970 12:00:00 GMT Manual for organization and instruction for aircraft warning service. Minnesota Adjutant General's Office., Minnesota Dept. of Military and Naval Affairs. 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