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EARTH REMOTE SENSING INSTRUMENTS > PASSIVE REMOTE SENSING > PHOTON/OPTICAL DETECTORS > CAMERAS > CAMERAS
EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA
35
TRANSECT
30 METERS TO 100 METERS
32
KITE
22
ANNUAL
19
biota
19
MONTHLY TO ANNUAL
16
FIELD SURVEY
13
environment
5
500 METERS TO 1 KILOMETER
3
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