Columbia subject headings:
Geology--Mexico--California, Gulf of--Bibliography.
Marine biology--Mexico--California, Gulf of--Bibliography.
Oceanography--Mexico--California, Gulf of--Bibliography.
Harvard subject headings:
Marine biology--Mexico--California, Gulf of--Bibliography.
Oceanography--Mexico--California, Gulf of--Bibliography.
Submarine geology--Bibliography.
Submarine geology--Mexico--California, Gulf of--Bibliography.
Princeton subject headings: