41Finally, it should be noted that in the absence of Community provisions, Member States are free to chose the modes of proof of the various matters defined in the directives which they transpose, provided that the effectiveness of Community law is not thereby undermined (see in particular, in that regard, Joined Cases 205/82 to 215/82 Deutsche Milchkontor and Others v Germany [1983] ECR 2633, paragraphs 17 to 25 and 35 to 39; Case 222/82 Marguerite Johnston v Chief Constable of the Royal Ulster Constabulary [1986] ECR 1651, paragraphs 17 to 21; and Case C-212/94 FMC and Others v Intervention Board for Agricultural Produce and Ministry of Agriculture, Fisheries and Food [1996] ECR I-389, paragraphs 49 to 51).
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