Norda maro: Malsamoj inter versioj

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*{{cite web
| title = North Sea
| work = Country Analysis Briefs
| publisher = Energy Information Administration (EIA)
| date = January 2007
| url =
| accessdate = 2008-01-23}}
*{{cite web|url=|title=North Sea Facts |work=Royal Belgian Institute of Natural Sciences|publisher=Management Unit of North Sea Mathematical Models|accessdate=2009-02-15}}
*{{cite book|last=Starkey|first=David J.|author2=Morten Hahn-Pedersen |title=Bridging troubled waters: Conflict and co-operation in the North Sea Region since 1550|publisher=Fiskeri-og Søfartsmuseets|location=Esbjerg [Denmark]|year=2005|isbn=87-90982-30-4}}
*{{cite book|last=Ilyina|first=Tatjana P |title=The fate of persistent organic pollutants in the North Sea multiple year model simulations of [gamma]-HCH, [alpha]-HCH and PCB 153Tatjana P Ilyina;|publisher=Springer|location=Berlin ; New York|year=2007|isbn=978-3-540-68163-2 }}
*{{cite book|last=Karlsdóttir|first=Hrefna M. |title=Fishing on common grounds: the consequences of unregulated fisheries of North Sea Herring in the postwar period|publisher=Ekonomisk-Historiska Inst., Göteborg Univ.|location=Göteborg|year=2005|isbn=91-85196-62-2 }}
*{{cite book|last=Tiedeke|first=Thorsten |author2=Werner Weiler |title=North Sea coast: landscape panoramas|publisher=Nelson: NZ Visitor; Lancaster: Gazelle Drake Academic|year=2007|isbn=978-1-877339-65-3 }}
*{{cite book|title=Rural history in the North Sea area: a state of the art (Middle Ages – beginning 20th century)|publisher=Brepols|location=Turnhout|year=2007|isbn=978-2-503-51005-7|author=ed. by Erik Thoen }}
*{{cite book|last=Waddington|first=Clive |author2=Kristian Pedersen |title=Mesolithic studies in the North Sea Basin and beyond: proceedings of a conference held at Newcastle in 2003|publisher=Oxbow Books|location=Oxford|year=2007|isbn=1-84217-224-7}}
*{{cite book|last=Zeelenberg|first=Sjoerd |title=Offshore wind energy in the North Sea Region: the state of affairs of offshore wind energy projects, national policies and economic, environmental and technological conditions in Denmark, Germany, The Netherlands, Belgium and the United Kingdom|publisher=University of Groningen|location=Groningen|year=2005|oclc=71640714}}
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