The Ph.D. Thesis submitted by Mr. Dina Mostafa Osman, Dairy Science. Department, entitled: "Chemical Changes occurring during the ripening Period of Ras cheese and their relation to the cheese making Processes" Under supervision of: 1. Prof. Hussein Abd0Elgelil Ahmed 2. Prof. Yousef Hasaneen Shaheen 3. Prof. Mohamed Attia Mohran Would be discussed at Wednesday 7/3/2012 on 10.00 o’clock in Department Hall