Subject
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hydrosphere
2
marine sediment
2
organic geochemistry
2
oxygen
2
petrology
2
sedimentary basin
2
sedimentary deposit
2
water resource
2
Agricultural ecology.
1
Animals, Fossil
1
Anthropology.
1
Atlantic Ocean
1
Biotic communities -- East (U.S.)
1
Biotic communities.
1
Botany.
1
Civilization -- History.
1
Climatology.
1
Clovis culture.
1
Conservation biology.
1
Cretaceous-Tertiary boundary.
1
Crystallography.
1
DNA structure
1
Diatoms, Fossil
1
Diseases.
1
Ecology.
1
Environment.
1
Estuaries
1
Ethnology.
1
Europe
1
Europe -- History.
1
Evolution (Biology)
1
Extinction (Biology)
1
Foraminifera
1
Foraminifera, Fossil
1
Forest ecology -- Africa, Central.
1
Forestry.
1
Fossils.
1
Freshwater ecology.
1
Freshwater fishes
1
Geochronometry.
1
Geological time.
1
Geology -- Africa.
1
Glacial epoch
1
Global environmental change.
1
Historical geology
1
Historical geology.
1
Human beings -- Bering Land Bridge -- Migrations.
1
Human ecology
1
Human population genetics -- Asia.
1
Human population genetics -- North America.
1
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