33In that regard, it is clear from the case-law of the Court that the Community legal order does not, in principle, aim to define concepts on the basis of one or more national legal systems unless there is express provision to that effect (Case 64/81 Corman [1982] ECR 13, paragraph 8, and Case C-296/95 EMO Tabac and Others [1998] ECR I-1605, paragraph 30).
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