93/239/EEC: Council Decision of 15 March 1993 concerning the conclusion of the Agreements in the form of exchanges of letters between the European Economic Community, of the one part, and the Republic of Austria, the Republic of Finland, the Republic of Iceland, the Kingdom of Norway and the Kingdom of Sweden, of the other part, on the provisional application of the Agreements on certain arrangements in the field of agriculture, signed by the said parties in Oporto on 2 May 1992