++++ Agriculture - Common organization of the markets - Oils and fats - Olive oil - Import levy on untreated olive oil - Fixing - Continual recourse to the tendering procedure during the years 1979 and 1980 - Lawfulness - Freedom to carry on economic activities - Principle of equal treatment - Infringement - None (EEC Treaty, Art. 40(3); Council Regulation No 136/66, Art. 16(1), as amended by Regulation No 1562/78, and Regulation No 2749/78, Art. 5(1) )