The Ph.D. Thesis submitted by Mr. Abdullah Helmy Abdel Ghani, Agricultural economics Department, entitled:   " Economic study for the production inputs of the main food crops in egypy (case study : Assiut Governorate) " Under supervision of: 1. Prof. Salah Ali Saleh 2. Prof. Yahya Ali Hussein  3. Prof. Galal Abdel-Fattah El-sagheer   Would be discussed at Sunday 4/2/2018 on 11.00 o’clock in Department Hall