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ENVIRONMENTAL IMPACT
2
FISHES
MICHIGAN
2
RIVERS
2
WINTER
2
*ECOSYSTEMS
1
*FISHERIES
1
*ICE
1
*RIVER ICE
1
*SAINT MARYS RIVER(MICHIGAN)
1
*WATER TRAFFIC
1
*WATER WAVES
1
Biology
1
CHANNELS
1
CHANNELS(WATERWAYS)
1
CUTTING
1
EGGS
1
Ecology
1
HABITATS
1
ISLANDS
1
Ice and Permafrost
1
NAVIGATION
1
OFFSHORE
1
ONTARIO
1
ROCK
1
SEASONS
1
SHIPS
1
SHORES
1
SITES
1
SUGARS
1
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