Columbia subject headings:
Estuarine sediments--California--San Francisco Bay--Composition.
Nickel--Environmental aspects--California--San Francisco Bay.
Harvard subject headings:
Estuarine sediments--California--San Francisco Bay--Composition.
Nickel--Environmental aspects--California--San Francisco Bay.
Princeton subject headings:
Estuarine sediments--California--San Francisco Bay--Composition.
Nickel--Environmental aspects--California--San Francisco Bay.