ad hoc working group of legal and technical experts for the elaboration of a global framework convention for the protection of the ozone layer يبدو
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- ad hoc working group of legal and technical experts for the elaboration of a global framework convention for the protection of the ozone layer معنى: فريق الخبراء القانونيين والتقنيين العامل المخصص لوضع اتفاقية إطارية عالمية لحماية طبقة الأوزون
