Changes made by 91/22/EEC: Commission Decision of 18 December 1990 amending Directive 80/862/EEC authorizing the Member States to provide for derogations from certain provisions of Council Directive 77/93/EEC, in respect of potato breeding material
EU Decision 1991/22
The legislation 91/22/EEC: Commission Decision of 18 December 1990 amending Directive 80/862/EEC authorizing the Member States to provide for derogations from certain provisions of Council Directive 77/93/EEC, in respect of potato breeding material changes, newest first. Choose one to see each change.
From legislation.gov.uk's record of changes, the official one: see it there.