Commission Regulation (EEC) No 1487/77 of 1 July 1977 re-establishing the levying of customs duties on sacks and bags, of a kind used for the packing of goods, falling within subheading 62.03 B I a) ex b) ex II, originating in Pakistan to which the preferential tariff arrangements set out in Council Regulation (EEC) No 3022/76 apply