3D

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Across
  1. 1. Leading seaport and industrial center
  2. 3. Citizen's refuse to join the European Union
  3. 6. Narrow sea inlet between high, rocky cliffs
  4. 7. Large shipping and fishing . . .
Down
  1. 2. Norway's capital
  2. 4. One of the longest coastlines in the world
  3. 5. This sea's oil fields may run dry
  4. 6. These shelter harbors