Changes made by 80/446/EEC: Commission Decision of 31 March 1980 authorizing the United Kingdom to restrict the marketing of seed of a variety of an agricultural plant species (Only the English text is authentic)
EU Decision 1980/446
No changes made by 80/446/EEC: Commission Decision of 31 March 1980 authorizing the United Kingdom to restrict the marketing of seed of a variety of an agricultural plant species (Only the English text is authentic) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.