Changes made by 91/642/EEC: Commission Decision of 21 November 1991 establishing a list of semen collection centres in Canada approved for the export to the Community of deep- frozen semen of domestic animals of the bovine species
EU Decision 1991/642
No changes made by 91/642/EEC: Commission Decision of 21 November 1991 establishing a list of semen collection centres in Canada approved for the export to the Community of deep- frozen semen of domestic animals of the bovine species are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.