http://www.rssboard.org/rss-specification 720 XTF Search Results (f4-format=Book;f5-subject=Presidents -- United States -- Biography;f6-subject=Presidents -- United States -- History) http://catalog.wrhs.org/collections/search?f4-format%3DBook;f5-subject%3DPresidents%20--%20United%20States%20--%20Biography;f6-subject%3DPresidents%20--%20United%20States%20--%20History Results for your query: f4-format=Book;f5-subject=Presidents -- United States -- Biography;f6-subject=Presidents -- United States -- History Thu, 01 Jan 1970 12:00:00 GMT "To the best of my ability": the American presidents. McPherson, James M., Rubel, David. 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