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*ICE
2
*RADAR
2
Active & Passive Radar Detection & Equipment
2
Ice and Permafrost
MEASUREMENT
Snow
2
THICKNESS
2
*STREAMS
1
AIRBORNE
1
BRIDGES
1
Brash ice
1
CROSSINGS
1
Civil Engineering
1
DETECTION
1
INLAND WATERWAYS
1
Ice bridges
1
Impulse radar
1
LAKES
1
Marine Engineering
1
RADAR EQUIPMENT
1
RADAR SIGNALS
1
SIGNAL PROCESSING
1
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