prepared by the Secretariat of the Economic Commission for Europe. prepared by the Secretarial of the Economic Commission for Europe Geneva. prepared by the Secretariat of the Economic Commission for Asia and the Far East. Secretariat of the Economic Commission for Europe. prepared by the Organisation for Economic Cooperation and Development. prepared by the Marketing Commission of Europump. prepared by the statistician to the Commission. prepared by the Statistician to the Commission. prepared by the statistician to the Commisson.