Changes made by 78/476/EEC: Council Decision of 30 May 1978 on the equivalence of checks on practices for the maintenance of varieties carried out in third countries
EU Decision 1978/476
No changes made by 78/476/EEC: Council Decision of 30 May 1978 on the equivalence of checks on practices for the maintenance of varieties carried out in third countries are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.