. . "Public Utilities Board (Singapore)" . . . . "2001" . . . . . "Public Utilities Board" . "1995" . . . . . "Public Utilties Board" . "PUB" . . "Public Utilities Board (Singapore)" . . . . . "2001-04-01" . . . "1995-10-01" . . . "1963-05-01" . . . . . . "1963" .