Changes made by Council Directive 79/1034/EEC of 6 December 1979 amending Directive 79/116/EEC concerning minimum requirements for certain tankers entering or leaving Community ports
EU Directive 1979/1034
Made to Council Directive 79/116/EEC of 21 December 1978 concerning minimum requirements for certain tankers entering or leaving Community ports
From legislation.gov.uk's record of changes, the official one: see it there.