multilateral conference on the causes and prevention of damage to forests and water by air pollution in europe يبدو
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- multilateral conference on the causes and prevention of damage to forests and water by air pollution in europe معنى: المؤتمر المتعدد الأطراف المعني بأسباب ومنع تضرر الغابات والمياه من التلوث الجوي في أوروبا