. "Adrianus van Kleffens (14 October 1899 - 2 Augustus 1973) was a Dutch civil servant and judge. He was a judge at the European Court of Justice from 1952 to 1958."@en . "Kleffens, Adrianus van"@en . "1899-10-14Z"^^ . "1973Z"^^ . . . "Adrianus van Kleffens"@en . "Dutch civil servant and judge" . "1899Z"^^ . "1973-08-02Z"^^ . .