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- Marine ecology (15)
- Aquatic ecology (1)
- Biological products (1)
- Bioorganic chemistry (1)
- Biotic communities (1)
- Carbon cycle (Biogeochemistry) (1)
- Chemical oceanography (1)
- Coastal ecology (1)
- Environmental chemistry (1)
- Estuarine ecology (1)
- Freshwater ecology (1)
- Landscape ecology (1)
- Marine biology (1)
- Marine ecology--Mexico, Gulf of (1)
- Marine fauna--Physiology (1)
- Marine microbiology (1)
- Marine pharmacology (1)
- Marine plants--Ecology (1)
- Marine plants--Mexico, Gulf of--Ecology (1)
- Oceanography (1)
- Paleoecology (1)