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G1-922
4
Geography (General)
arctic basin
2
dc bus
1
digital television complex
1
electricity storage
1
ice age
1
ice concentration
1
ice thickness
1
life support
1
nuclear icebreaker
1
nuclear icebreaker «50 let pobedy»
1
power plant
1
power supply
1
sea ice concentration
1
sea ice thickness
1
ship observations
1
shipborne sea-ice observations
1
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