http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f70-subject=Trees -- United States -- Classification) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f70-subject%3DTrees%20--%20United%20States%20--%20Classification Results for your query: docsPerPage=100;f70-subject=Trees -- United States -- Classification Thu, 01 Jan 1970 12:00:00 GMT Forest trees and forest regions of the United States. Mattoon, Wilbur R. (Wilbur Reed), 1875-1941 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