http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f53-subject=Gypsum) http://norton.wrhs.org/collections/search?docsPerPage%3D100;f53-subject%3DGypsum Results for your query: docsPerPage=100;f53-subject=Gypsum Thu, 01 Jan 1970 12:00:00 GMT The gypsum of Michigan and the plaster industry. Grimsley, George Perry, 1868- 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