The M.Sc. Thesis submitted by Mr. Hassan Ali Khalifa, Plant Protection. Department, entitled: "Ecological and biological control studies on some terrestrial snails and their associated arthropods in Assiut Governorate" Under supervision of: 1.    Prof. Khalifa Hussein Abd-Elgwad 2.    Prof. Samer Hassan Manaa 3.    Prof. Hani Ahmed Sayied   Would be discussed at Wednesday 16/1/2013 on 11.00 o’clock, in department hall