Columbia subject headings:
Harvard subject headings:
Oceanography--Aden, Gulf of--Bibliography.
Oceanography--Red Sea--Bibliography.
Suez Canal (Egypt)--Bibliography.
Princeton subject headings:
Marine biology--Research--Aden, Gulf of--Bibliography.
Marine biology--Research--Red Sea--Bibliography.
Marine biology--Research--Suez Canal (Egypt)--Bibliography.
Oceanography--Research--Aden, Gulf of--Bibliography.
Oceanography--Research--Red Sea--Bibliography.
Oceanography--Research--Suez Canal (Egypt)--Bibliography.