Changes to 90/52/EEC: Commission Decision of 17 January 1990 authorizing Member States temporarily to take additional measures as regards Denmark against the dissemination of Corynebacterium sepedonicum and repealing Decision 88/36/EEC
EU Decision 1990/52
Made by 92/120/EEC: Commission Decision of 4 February 1992 amending Decision 90/52/EEC authorizing Member States temporarily to take additional measures as regards Denmark against the dissemination of Corynebacterium sepedonicum
From legislation.gov.uk's record of changes, the official one: see it there.