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Línia 30:
*[http://www.greatlakes-seaway.com/en/index.html Great Lakes St Lawrence Seaway System web site]
*[http://www.seaway.dot.gov/ The St Lawrence Seaway Development Corporation]
*[http://books.google.com/books?id=ZNsDAAAAMBAJ&pg=PA97&dq=Popular+Mechanics+Science+installing+linoleum&source=bl&ots=QDvNQKlT8H&sig=Rc-MSmXVaUvGIGu_pAReHhhILGU&hl=
*[http://hot.mixtopix.com/st-lawrence-seaway-april-25-1959-2590/ St. Lawrence Seaway April 25, 1959]
*[http://eisenhower.archives.gov/research/online_documents/st_lawrence_seaway.html Documents and Photographs relating to the St. Lawrence Seaway, Dwight D. Eisenhower Presidential Library]
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