والاعداد الهائلة للانواع والتعقيد في العلاقات المتبادلة بينها تجعل مهمة الباحثين مهمة مروِّعة.
Member States shall require that packages of basic seed, certified seed and commercial seed, except where seed of the two latter categories takes the form of small EEC B packages, be sealed officially or under official supervision in such a manner that they cannot be opened without damaging the sealing system or leaving evidence of tampering on either the official label provided for in Article # or the packagejw2019 jw2019