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Ice and Permafrost
2
Snow
2
*ALASKA
1
*ARCTIC REGIONS
1
*COASTAL TOPOGRAPHIC FEATURES
1
*ICE
1
*OHIO RIVER
1
*RIVERS
1
*River ice
1
*TERRAIN
1
AERIAL PHOTOGRAPHS
1
AREA COVERAGE
1
Alleheny River
1
Atlases
1
BARROW(ALASKA)
1
COASTAL REGIONS
1
EROSION
1
Illinois River
1
Kankakee River
1
MAPS
1
Monongahela River
1
OCEAN WAVES
1
PERIODIC VARIATIONS
1
SEA ICE
1
SEASONAL VARIATIONS
1
WU32227
1
WU32228
1
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