Council Regulation (EEC) No 591/85 of 26 February 1985 amending Regulation (EEC) No 804/68 on the common organization of the market in the milk and milk products sector and Regulation (EEC) No 857/84 adopting general rules for the application of the levy referred to in Article 5c of Regulation (EEC) No 804/68 in the milk and milk products sector