Columbia subject headings:
Oil pollution of the sea--Law and legislation--European Union countries.
Oil pollution of the sea--Law and legislation--Germany.
Oil pollution of the sea--Law and legislation.
Tankers--Law and legislation--European Union countries.
Tankers--Law and legislation--Germany.
Tankers--Law and legislation.
Harvard subject headings:
Oil pollution of the sea--Law and legislation
Oil spills--Law and legislation
Tankers--Law and legislation
Princeton subject headings: