Changes to 91/28/EEC: Commission Decision of 19 December 1990 authorizing certain Member States to provide for exceptions from certain provisions of Directive 77/93/EEC in respect of potatoes for human consumption originating in Turkey (only the German, French and Dutch texts are authentic)
EU Decision 1991/28
The legislation that changes 91/28/EEC: Commission Decision of 19 December 1990 authorizing certain Member States to provide for exceptions from certain provisions of Directive 77/93/EEC in respect of potatoes for human consumption originating in Turkey (only the German, French and Dutch texts are authentic), newest first. Choose one to see each change.
From legislation.gov.uk's record of changes, the official one: see it there.