Title Work Title No: 4843 Medium: Moving Image Date: 1967 (Release) Original Summary: "Depicts changes that have taken place in navigation on the lower MIssissippi River and on the inland waterways from steamboats to Diesel towboats."--Audiovisual Materials Catalog 2002-2007 by Audiovisual Services of St. Louis Public Schools. "Emphasizes the essential role of the Mississippi River as the main artery of the vast inland navigation system of the United States."--WorldCat. Countries of Origin: U.S.A. Genres: Educational
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