Changes to Council Directive 77/93/EEC of 21 December 1976 on protective measures against the introduction into the Member States of harmful organisms of plants or plant products
EU Directive 1977/93
Made by Commission Directive 92/10/EEC of 19 February 1992 amending certain Annexes to Council Directive 77/93/EEC on protective measures against the introduction into the Member States of organisms harmful to plants or plant products
From legislation.gov.uk's record of changes, the official one: see it there.