Volume 43.1, Issue 85, April 2000, Pages 51-74
H.M. Abd El-Hafeez; Samar S. Tawfik; Elham S.E. Saleh; Hanaa I. Faheem; S.Kh. Abd El-Ghaffar
Volume 43.1, Issue 85, April 2000, Pages 140-158
A.M. Zaitoun; H.S. Ali; S.Kh. Abd El-Ghaffar