Columbia subject headings:
Dispersing agents--Congresses.
Marine ecology--Congresses.
Oil spills--Environmental aspects--Congresses.
Harvard subject headings:
Dispersing agents--Congresses.
Marine ecology--Congresses
Oil spills--Environmental aspects--Congresses.
Princeton subject headings:
Dispersing agents--Congresses.
Marine ecology--Congresses.
Oil spills--Environmental aspects--Congresses.