http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f8-subject=Pennsylvania -- Population) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f8-subject%3DPennsylvania%20--%20Population Results for your query: docsPerPage=100;f8-subject=Pennsylvania -- Population Thu, 01 Jan 1970 12:00:00 GMT The making of Pennsylvania: an analysis of the elements of the population and the formative influences that created one of the greatest of the American States. Fisher, Sydney George, 1856-1927 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 Population: [Pennsylvania]. United States Bureau of the Census. 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