/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: yousryaboueldahab https://cdn.slidesharecdn.com/profile-photo-yousryaboueldahab-48x48.jpg?cb=1523663056 Agricultural & Environmental Consultant Dr. Engineer in Ruhenstroth Foundation and General Manager Of Ruhenstroth Allied Co.for Develomment & Community Service