Regulation (EEC) No 2330/75 of the Commission of 11 September 1975 re-establishing the levying of customs duties on yarn of combed sheep's or lambs' wool (worsted yarn, not put up for retail sale) falling within heading No 53.07, originating in developing countries to which the preferential tariff arrangements set out in Council Regulation (EEC) No 3048/74 of 2 December 1974 apply