1990. 2011-11-15T20:31:24Z. 2015-10-21T15:05:39Z. United States. National Ocean Service. The Service. English. Public. Saint Lawrence River, Saint Lawrence Seaway, and Ontario, Lake (N.Y. and Ont.).
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1993. 2011-11-15T20:58:34Z. 2015-10-21T15:05:40Z. U.S. Coast and Geodetic Survey. The Survey ; NOAA Distribution Branch, N/CG 33, National Ocean Service. English. Public. Saint Lawrence River and Saint Lawrence Seaway.
1989. 2011-11-15T20:57:55Z. 2015-10-21T15:05:40Z. United States. National Ocean Service. The Service. English. Public. Saint Lawrence River and Saint Lawrence Seaway.
1989. 2011-11-15T20:40:07Z. 2015-10-21T15:05:39Z. United States. National Ocean Service. The Service. English. Public. Saint Lawrence River, Saint Lawrence Seaway, and Ontario, Lake (N.Y. and Ont.).
1993. 2011-11-15T20:40:56Z. 2015-10-21T15:05:39Z. U.S. Coast and Geodetic Survey. The Survey ; NOAA Distribution Branch, N/CG 33, National Ocean Service. English. Public. Saint Lawrence River, Saint Lawrence Seaway, and Ontario, Lake (N.Y. and Ont.).
1992. 2011-11-15T21:04:54Z. 2015-10-21T15:05:40Z. United States. National Ocean Service. The Service. English. Public. Saint Lawrence River and Saint Lawrence Seaway.
1989. 2011-11-15T21:04:18Z. 2015-10-21T15:05:40Z. United States. National Ocean Service. The Service. English. Public. Saint Lawrence River and Saint Lawrence Seaway.
1990. 2011-11-15T20:24:51Z. 2015-10-21T15:05:39Z. United States. National Ocean Service. The Service. English. Public. Saint Lawrence River, Saint Lawrence Seaway, and Ontario, Lake (N.Y. and Ont.).
1990. 2011-11-15T20:18:06Z. 2015-10-21T15:05:39Z. United States. National Ocean Service. The Service. English. Public. Saint Lawrence River and Saint Lawrence Seaway.
1989. 2011-11-15T21:00:14Z. 2015-10-21T15:05:40Z. United States. National Ocean Service. The Service. English. Public. Saint Lawrence River and Saint Lawrence Seaway.