Columbia subject headings:
British Broadcasting Corporation.
Central Electricity Board.
Government corporations--Great Britain.
Great Britain. Central Electricity Generating Board.
London Passenger Transport Board.
Port of London Authority.
Harvard subject headings:
British Broadcasting Corporation
Government corporations--Great Britain.
Great Britain. Central Electricity Board.
London Passenger Transport Board.
Port of London Authority.
Princeton subject headings:
British Broadcasting Corporation.
Government corporations--Great Britain.
Great Britain. Central Electricity Board
London Passenger Transport Board.
Port of London Authority.