(3GdGYeGd GdcGedI(B: (3CHh GdeYGWi CHh GdfLG (B/ s - (3GHhGdeYGWi GHhGdfLGs ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1993)
Keywords: (3GdGOH GdYQHis; (3GdbUU GdYQHjIs; (3GdbUU GdJGQjNjIs; (3GdbUU GdGLJeGYjIs; (3GdbUI GdYQHjIs