http://www.rssboard.org/rss-specification720XTF Search Results (docsPerPage=100;f76-subject=Plane trigonometry)
http://norton.wrhs.org/collections/search?docsPerPage%3D100;f76-subject%3DPlane%20trigonometry
Results for your query: docsPerPage=100;f76-subject=Plane trigonometryThu, 01 Jan 1970 12:00:00 GMTA course of mathematics: containing the principles of plane trigonometry, mensuration, navigation, and surveying. Adapted to the method of instruction in the American colleges. Day, Jeremiah, 1773-1867
http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc
http://norton.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrcThu, 01 Jan 1970 12:00:00 GMT