Changes made by Regulation (EEC) No 1310/77 amending Regulation (EEC) No 801/77 on special conditions for the granting of…
EU Regulation No 1310/1977
Made to Regulation (EEC) No 801/77 on special conditions for the granting of private storage aid for pigmeat
From legislation.gov.uk's record of changes, the official one: see it there.