Columbia subject headings:
Water--Pollution--Law and legislation--Great Britain--Criminal provisions.
Water--Pollution--Law and legislation--Great Britain.
Harvard subject headings:
Water--Pollution--Law and legislation--Great Britain--Criminal provisions.
Water--Pollution--Law and legislation--Great Britain.
Princeton subject headings:
Water--Pollution--Law and legislation--Great Britain--Criminal provisions.
Water--Pollution--Law and legislation--Great Britain.