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*BOOMS(EQUIPMENT)
1
*CUTTING
*ICE PREVENTION
1
*INLAND WATERWAYS
1
ACCUMULATION
1
DEMONSTRATIONS
1
ELECTRIC POWER PLANTS
1
GREAT LAKES
1
HYDROELECTRICITY
1
ICE COVER
1
ISLANDS
1
Ice and Permafrost
LEVEL(QUANTITY)
1
Marine Engineering
1
NAVIGATION
1
RELIABILITY
1
SAINT MARYS RIVER(MICHIGAN)
STABILIZATION
1
Snow
1
THICKNESS
1
TRANSPORTATION
1
WATER
1
WINTER
1
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