Commission Regulation (EEC) No 1181/91 of 6 May 1991 laying down certain additional detailed rules for the application of the supplementary trade mechanism (STM) to trade in fruit and vegetables between Spain and the Community as constituted on 31 December 1985 as regards tomatoes, lettuce, broad-leaf endives, carrots, artichokes, table grapes, melons, apricots, peaches and strawberries