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arctic shipping
3
ice-breaking vessel
3
infrastructure support
3
sustainability
3
Arctic shipping
2
infrastructure
2
logistics
2
marine transportation system
2
search and rescue (SAR)
2
Environmental effects of industries and plants
1
Environmental sciences
1
GE1-350
1
HD28-70
1
HE1-9990
1
K4011-4343
1
Management. Industrial management
1
Renewable energy sources
1
TD194-195
1
TJ807-830
1
Transportation and communication
1
Transportation and communications
1
envir
1
geo
1
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