Changes made by 78/73/EEC: Commission Decision of 20 December 1977 laying down the standard code and the detailed rules for the transcription onto magnetic tape of the data of the survey on the structure of agricultural holdings for 1977
EU Decision 1978/73
No changes made by 78/73/EEC: Commission Decision of 20 December 1977 laying down the standard code and the detailed rules for the transcription onto magnetic tape of the data of the survey on the structure of agricultural holdings for 1977 are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.