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TRIANGULATION
Ice and Permafrost
6
Snow
6
TRANSLATIONS
5
Geodesy
4
(*GLACIERS
3
MEASUREMENT
3
SURVEYING(GEOGRAPHIC)
3
TERRAIN
3
USSR
3
(*GEODESICS
2
(*ICE
2
ACCURACY
2
CONSTRUCTION
2
Cartography and Aerial Photography
2
MAPPING
2
PHOTOGRAPHIC ANALYSIS
2
PHOTOINTERPRETATION
2
(*AERIAL PHOTOGRAPHY
1
(*FLOATING BODIES
1
(*MAPPING
1
(*OCEAN SURVEILLANCE
1
(*SURVEYING(GEOGRAPHIC)
1
(*TERRAIN
1
(*VISUAL SIGNALS
1
(*WASHINGTON(STATE)
1
*ARCTIC REGIONS)
1
*DRILLING MACHINES
1
*GEODESICS
1
*PERMAFROST)
1
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