http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f60-subject=Mineral industries -- United States -- Periodicals) http://norton.wrhs.org/collections/search?docsPerPage%3D100;f60-subject%3DMineral%20industries%20--%20United%20States%20--%20Periodicals Results for your query: docsPerPage=100;f60-subject=Mineral industries -- United States -- Periodicals Thu, 01 Jan 1970 12:00:00 GMT Mineral resources of the United States. United States Bureau of Mines., Geological Survey (U.S.) http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT Minerals yearbook. United States Bureau of Mines., Geological Survey (U.S.) http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT