Council Regulation (EEC) No 1786/89 of 19 June 1989 terminating the proceeding in connection with a review of anti-dumping measures concerning imports of fibre building board (hardboard) originating in Czechoslovakia, Poland and the USSR, confirming the expiry of the definitive anti-dumping duties imposed on imports from Czechoslovakia and Poland, and repealing the definitive anti-dumping duty imposed on imports from the USSR