http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f277-subject=Airplanes -- Motors -- Valves) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f277-subject%3DAirplanes%20--%20Motors%20--%20Valves Results for your query: docsPerPage=100;f277-subject=Airplanes -- Motors -- Valves Thu, 01 Jan 1970 12:00:00 GMT Performance of a 300-horsepower Hispano-Suiza airplane engine. Sparrow, S. W., White, H. S., United States Bureau of Standards. 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