Shipping in Arctic Waters A comparison of the Northeast, Northwest and Trans Polar Passages - Østreng, Willy; Eger, Karl Magnus; Fløistad, Brit; Jørgensen-Dahl, Arnfinn; Lothe, Lars; Mejlænder-Larsen, Morten; Wergeland, Tor (Springer Berlin Heidelberg : Imprint: Springer, 2013)