Changes made by Regulation (EEC) No 2735/75 of the Council of 29 October 1975 determining, for the 1975/76 marketing year, the single intervention prices for barley, rye, durum wheat and maize, and the principal marketing centres for common wheat and the derived intervention prices applicable at those centres: Regulation (EEC) No 1171/75 of the Council of 28 April 1975 determining, for the 1975/76 marketing year, the single intervention prices for barley, rye, durum wheat and maize, and the principal marketing centres for common wheat and the derived intervention prices applicable at those centres