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*24504$aThe Northern Sea Route Project :$bpilot studies report$cedited by Willy Østreng & Arnfinn Jørgensen-Dahl
*260  $aLysaker$bFridtjof Nansens institutt$cc1991
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*7001 $aJørgensen-Dahl, Arnfinn$d1939-$0(NO-TrBIB)90336943$_26611200
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