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CONTINENT >
9
GEOGRAPHIC REGION >
9
OCEAN >
9
POLAR
9
SOUTHERN OCEAN
biota
9
oceans
9
ANIMALS/VERTEBRATES
8
BIOLOGICAL CLASSIFICATION
8
BIRDS
8
EARTH SCIENCE
8
ANTARCTICA
7
PENGUINS
7
AMD
5
AMD/AU
5
BREEDING
5
BREEDING PRODUCTIVITY
5
CEOS
5
AIRCRAFT
4
BIOSPHERE
4
BIOSPHERIC INDICATORS
4
CAMERAS
4
CLIMATE INDICATORS
4
ECOLOGICAL DYNAMICS
4
FIELD SURVEYS
4
HELICOPTER
4
POPULATION DYNAMICS
4
SPECIES/POPULATION INTERACTIONS
4
BOUNDARIES
3
COLONIES
3
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