STOLTENBERG DECLINES COMMENT ON CURRENCY ZONES West German Finance Minister Gerhard Stoltenberg declined to comment on whether unpublished target zones for currencies agreed at last February's Louvre accord had been changed as a result of the meeting on Monday with U.S. Treasury Secretary James Baker. He was asked about target zones at a news conference in Bonn. Stoltenberg referred to a statement released after Monday's meeting, which said continuing cooperation was aimed at promoting currency stability at current levels. This was the same formula used in the text of the Louvre accord, he noted.