Changes made by 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
No changes made by 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 are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.