1992. 2012-08-01T15:08:50Z. 2015-07-07T19:07:01Z. Geological Survey of Canada. Geophysical Data Centre. The Survey. English&French. Public. Canada.
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1992. 2012-08-01T14:56:37Z. 2015-07-07T19:00:34Z. The Survey. English&French. Public. North America.
1992. 2012-08-01T14:46:30Z. 2015-07-07T19:04:54Z. The Survey. English&French. Public. North America.
1992. 2012-08-01T15:02:44Z. 2015-07-07T19:05:36Z. Geological Survey of Canada. Geophysical Data Centre. The Survey. English&French. Public. Canada.
1989. 2004-05-07T16:05:45Z. 2015-07-14T22:22:30Z. Glavnoe upravlenie navigat︠s︡ii i okeanografii Ministerstva oborony SSSR. Charts Division. Head Dept. of Navigation and Oceanography of the USSR Ministry of Defence. English&French. Public. Mediterranean Sea, Mediterranean Region, and Black Sea.
1992. 2012-08-01T14:41:43Z. 2015-07-07T19:05:36Z. The Survey. English&French. Public. North America.