Changes to 89/310/EEC: Commission Decision of 28 April 1989 on the quantities of sheepmeat and goatmeat that may be imported in 1989 into certain sensitive marketing zones from certain non-member countries
EU Decision 1989/310
Made by 89/628/EEC: Commission Decision of 1 December 1989 amending Decision 89/310/EEC on the quantities of sheepmeat and goatmeat that may be imported in 1989 into certain sensitive marketing zones from certain non- member countries
From legislation.gov.uk's record of changes, the official one: see it there.