http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f6-subject=Astronomy -- Bibliography) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f6-subject%3DAstronomy%20--%20Bibliography Results for your query: docsPerPage=100;f6-subject=Astronomy -- Bibliography Thu, 01 Jan 1970 12:00:00 GMT Aeronautics and space bibliography of adult aerospace books and materials. National Aerospace Education Council (U.S.), United States National Aeronautics and Space Administration. 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 Aeronautics and space bibliography for the secondary grades. National Aerospace Education Council (U.S.), United States National Aeronautics and Space Administration. 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 A bibliography of adult aerospace books and materials. National Aerospace Education Council (U.S.), United States National Aeronautics and Space Administration. 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