Whereas, taking into account marketing structures, Member States must, on the basis of procedures and criteria adopted by the Commission, conduct a census of operators and establish quantities marketed to be used as a reference for the issue of certificates;
ker morajo države članice, ob upoštevanju tržnih struktur, na podlagi postopkov in kriterijev, ki jih sprejme Komisija, voditi popis uvoznikov in določati prodane količine, ki se uporabijo kot referenca za izdajo potrdil;