Changes to Council Directive 72/280/EEC of 31 July 1972 on the statistical surveys to be made by Member States on milk and milk products
EU Directive 1972/280
Made by Council Directive 73/358/EEC of 19 November 1973 amending certain Directives following the enlargement of the Community
From legislation.gov.uk's record of changes, the official one: see it there.