United States. Central Intelligence Agency, CIA World Fact Book, 2004 — Arctic Ocean (2004)
“ Economy Arctic Ocean Economy - overview: Economic activity is limited to the exploitation of natural resources, including petroleum, natural gas, fish, and seals. Transportation Arctic Ocean Ports and harbors: Churchill (Canada) , Murmansk (Russia) , Prudhoe Bay (US) Transportation - note: sparse network of air, ocean, river, and land routes ”
