Changes made by Commission Regulation (EEC) No 467/77 of 7 March 1977 on the method and the rate of interest to be used for calculating the costs of financing the intervention measures comprising buying in, storage and disposal: Regulation (EEC) No 943/73 of the Commission of 6 April 1973 on the method and the rate of interest to be used for calculating the costs of financing intervention measures on the internal market for unmanufactured tobacco