http://www.rssboard.org/rss-specification 720 XTF Search Results (f1-subject=United States;f2-subject=Rubber Production Trade unions History) http://catalog.wrhs.org/collections/search?f1-subject%3DUnited%20States;f2-subject%3DRubber%20Production%20Trade%20unions%20History Results for your query: f1-subject=United States;f2-subject=Rubber Production Trade unions History Thu, 01 Jan 1970 12:00:00 GMT American rubber workers & organized labor, 1900-1941. Nelson, Daniel, 1941- 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