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Alaska
3
Arctic National Wildlife Refuge
Environmental impacts
Seismic surveys
3
Northern
2
Tundra ecology
2
Aerial photography
1
Airplanes
1
Animal behaviour
1
Animal distribution
1
Animal population
1
Animal reproduction
1
Denning
1
Design and construction
1
Effects monitoring
1
Ice roads
1
Inuvialuit Settlement Region
1
N.W.T./Yukon
1
Noise
1
Off-road transportation
1
Oil well drilling
1
Plant cover
1
Polar bears
1
Size
1
Snow
1
Snow cover
1
Telemetry
1
Thickness
1
Vehicles
1
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