(3HfGA GdLjT GdESQGFjdj s - (3Bdhf EjLGd s ([(3ecGf GdfTQ ZjQ eMOO (B] :s (3hRGQI GdEYdGe gjFI GdGSJYdGeGJ (B_ (3cJH eJQLeI (B,s, 1970)
. 240-220 (3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3Ydhe YScQjI s