Council Regulation (EEC) No 3535/80 of 22 December 1980 on the conclusion of the Agreement in the form of an exchange of letters between the European Economic Community and the People' s Democratic Republic of Algeria fixing the additional amount to be deducted from the levy on imports into the Community of untreated olive oil, originating in Algeria, for the period from 1 November 1980 to 31 October 1981