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CONTINENT >
6
FIELD INVESTIGATION
FIELD SURVEYS
6
SEALS/SEA LIONS/WALRUSES
6
biota
6
oceans
6
ANIMALS/VERTEBRATES
5
GEOGRAPHIC REGION >
5
MAMMALS
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POLAR
5
AMD
4
AMD/AU
4
BIOLOGICAL CLASSIFICATION
4
BIOSPHERE
4
BIOSPHERE >
4
CARNIVORES
4
CEOS
4
EARTH SCIENCE
4
EARTH SCIENCE >
4
ECOLOGICAL DYNAMICS
4
ANTARCTICA
3
ANTARCTICA >
3
AQUATIC ECOSYSTEMS
3
ARGOS >
3
ARGOS Data Collection and Position Location System
3
COASTAL
3
Climate Change
3
ECOSYSTEM FUNCTIONS
3
ECOSYSTEMS >
3
Elephant Seals
3
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