Abo-Zeid , Raafat Khalaf - Allah Rashed. Asymptotic behavior of solutions of some classes of difference equations . [Thesis /] السلوك التقربي لحلول بعض فصول من معادلات الفروق . Raafat Khalaf - Allah Rashed Abo-Zeid . - 2007. - 101p : ; 25 cm. includes summary in arabic. Thesis (Ph.D ) -- Helwan university, 2007. includes bibliogrphic referance (96-101). All age. Dewey Class. No.: 515.625 National Library of Medicine Call No.: / AA