/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: mohamedbarkat334 https://cdn.slidesharecdn.com/profile-photo-mohamedbarkat334-48x48.jpg?cb=1523606251 ������惆愕 惆����悸 ���� 悋����������悋悄 悋��惶��悋惺��悸 ing辿nieur d'etat en chimie industrielle industrial chemistry engeineer