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EARTH REMOTE SENSING INSTRUMENTS > PASSIVE REMOTE SENSING > SPECTROMETERS/RADIOMETERS > SPECTROMETERS > SPECTROMETERS
EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA
7
FIELD SURVEY
7
biota
GRID
5
30 METERS TO 100 METERS
3
500 METERS TO 1 KILOMETER
3
ANNUAL
3
MONTHLY TO ANNUAL
3
TRANSECT
1
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