Changes to 90/403/EEC: Council Decision of 27 July 1990 amending Decision 81/956/EEC on the equivalence of seed potatoes produced in third countries
EU Decision 1990/403
No changes to 90/403/EEC: Council Decision of 27 July 1990 amending Decision 81/956/EEC on the equivalence of seed potatoes produced in third countries are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.