(3GdYbe YfO GdfSGA h GdQLGd (B: s (3CSHGHg h WQb YdGLg (B/ s - (3QaYJ, eMeOs ((3HjQhJ (B:s (3OGQ h ecJHI GdgdGd,s, 1986)
Keywords: (3GdYbes; (3GdLgGR GdJfGSdjs; (3CeQGV GdLgGR GdJfGSdjs