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Freeman, R. F.
3
Freeman,R. F.
3
Boeger, A. C.
2
Koester, R. W.
2
Kusunoki,Kou
2
Tripp,Richard B.
2
Agee, H. J.
1
Gow, Anthony J.
1
Hibler,W. D. , III
1
Jerdon, H. P.
1
Monroe,M. R.
1
Posey, Pamela G.
1
Preller, Ruth H.
1
Rankin,R. D.
1
Tucker, Walter B., III
1
Tucker,W. B. , III
1
Weeks, Wilford F.
1
Zubov, N. N.
1
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THICKNESS
Ice and Permafrost
13
Snow
13
ARCTIC OCEAN
9
GREENLAND SEA
8
FREEZING
7
ICE ISLANDS
7
MELTING
7
ARCTIC REGIONS
6
FLIGHT PATHS
6
SEA ICE
6
DENMARK
5
GREENLAND
5
MAPS
5
Meteorology
5
OBSERVATION AIRCRAFT
5
STRAITS
5
(*AERIAL RECONNAISSANCE
4
(*SEA ICE
4
OCEAN CURRENTS
4
POLAR REGIONS
4
SEA ICE)
4
SEA WATER
4
*SEA ICE
3
AERIAL RECONNAISSANCE
3
ALASKA
3
ARCTIC OCEAN)
3
ARCTIC REGIONS)
3
CHUKCHI SEA
3
CRACKS
3
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Arctic
15
Arctic Ocean
15
Greenland
Ice
13
permafrost
13
Sea ice
12
Greenland Sea
11
Arctic Basin
8
Denmark Strait
6
Alaska
5
East Greenland
4
Baffin
3
Baffin Bay
3
Chukchi
3
Chukchi Sea
3
Barents Sea
2
North Atlantic
2
ice pack
2
Archipelago
1
Baffin Island
1
Banks Island
1
Canadian Archipelago
1
Davis Strait
1
Ellesmere Island
1
Fram Strait
1
Iceberg*
1
Iceland
1
Kara Sea
1
Mackenzie river
1
Norwegian Sea
1
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