http://www.legislation.gov.uk/eudr/1989/284Council Directive 89/284/EEC of 13 April 1989 supplementing and amending Directive 76/116/EEC in respect of the calcium, magnesium, sodium and sulphur content of fertilizersCouncil Directive 89/284/EECenQueen's Printer of Acts of Parliament2019-09-08