Changes made by Regulation (EEC) No 2091/91 fixing for the four previous marketing years 1986/87 to 1989/90 the average…
EU Regulation No 2091/1991
No changes made by Regulation (EEC) No 2091/91 fixing for the four previous marketing years 1986/87 to 1989/90 the average… are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.