13. 1. 90 Official Journal of the European Communities No L 11/51 COMMISSION DECISION of 20 December 1989 approving the mechanism for differentiating between producers of heavy lambs and producers of light lambs in Spain (Only the Spanish text is authentic) (90/19/EEC) THE COMMISSION OF THE EUROPEAN COMMUNITIES, Having regard to the Treaty establishing the European Economic  Community, Having regard to Council Regulation (EEC) No 3013/89. . of 25 September 1989 on the common organization of the " market in sheepmeat and goatmeat(’), and in particular Article 4 (4) thereof, Whereas Article' 4°(4) of Regulation (EEC) No 3013/89 provides for the introduction of a mechanism for differen- tiating between producers of heavy lambs and producers of light lambs; whereas the introduction of such a mechanism is a prerequisite for the application during the 1990 marketing year of the arrangements provided for in Article 22 (8) of that Regulation; - Whereas on 28 November 1989 Spain forwarded to the Commission a draft mechanism for differentiating between producers of heavy lambs and producers of light lambs; whereas the components of the mechanism provided for by Spain are likely to ensure suitable application of the provisions laid down in Articles 4 (3) - and S (4) of Regulation (EEC) No 3013/89 pending the () OJ No L 289, 7. 10. 1989, p. 1. application of the Community measures to be adopted on the subject, HAS ADOPTED THIS DECISION : Article 1 The mechanism for. differentiating between. producers of heavy lambs.and. producers of light lambs forwarded by Spain-on 28 November 1989 is hereby approved. Article 2 This Decision is addressed to Spain. Done at Brussels, 20 December 1989. For the Commission Ray MAC SHARRY Member of the Commission