Via marítima del Sant Llorenç: diferència entre les revisions

*[http://www.cbc.ca/archives/categories/economy-business/transport/the-st-lawrence-seaway-gateway-to-the-world/st-lawrence-seaway-is-completed.html CBC Digital Archives — The St Lawrence Seaway: Gateway to the world]

*[http://www.ppl.nl/bibliographies/all/?bibliography=water Bibliography on Water Resources and International Law] See ''Great Lakes; St. Lawrence River and Seaway''. Peace Palace Library

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