The Great Lakes - North America's Island Seas
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✎ Suggest a correctionDescribes the importance of the Great Lakes to the fishing, logging, farming, mining and manufacturing industries of the mid-American region. Shows how the development of the canal system and the completion of the St Lawrence Seaway opened the lakes to ocean-going vessels.
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- A-V Online (National Information Center for Educational Media). CD-ROM database of educational and documentary media, compiled and maintained by the National Information Center for Educational Media (NICEM). — title, year, creator, length, format, description
- 16mm Filmography (legacy record) — sound, catalog record
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