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Arctic routes
geo
Arctic
3
Northeast Passage
3
Northwest Passage
3
envir
3
sea shipping and transportation
3
shipping
3
Arctique
2
Northern Sea Route
2
Route maritime du Nord
2
passage du Nord-est
2
passage du Nord-ouest
2
routes arctiques
2
transport maritime
2
archeo
1
container flow assignment
1
sea ice extent
1
sea–rail intermodal network
1
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