"Балтын тэнгис"-ны өөр хувилбарууд

fixing dead links
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* [http://www.balticseaportal.fi The Baltic Sea Portal] - a site maintained by the [http://www.fimr.fi/en.html Finnish Institute of Marine Research] (FIMR) (in English, Finnish, Swedish and Estonian)
* [http://depts.washington.edu/baltic/encyclopedia.html Encyclopedia of Baltic History]
* [http://web.archive.org/web/20060219105754/http://www.nada.kth.se/~ovidiu/maps/images/1493-schedel-europa.jpg 1493 H. Schedel Map with Mare Germanicum]
* [http://www.abc.se/~pa/uwa/wrecks.htm Old shipwrecks] in the Baltic
* [http://www.pgi.gov.pl/pgi_en/index.php?option=news&task=viewarticle&sid=4&Itemid=2 How the Baltic Sea was changing] - Prehistory of the Baltic from the [http://www.pgi.gov.pl/ Polish Geological Institute]