Commission Regulation (EEC) No 2522/77 of 15 November 1977 re-establishing the levying of customs duties on appliances, apparatus, accessories and requisites for gymnastics or athletics, or for sports and outdoor games falling within subheadings 97.06 B and C, originating in developing countries to which the preferential tariff arrangements set out in Council Regulation (EEC) No 3021/76 apply