(3GMSf GdJbGSje ai eYQaI GdGbGdje (B/ s - (3GdebOSi (B: (3TeS GdOjf GHh YHOGddg eMeO Hf GMeO Hf GHi HcQ GdHfG GdMfais ((3GdbGgQI (B: s (3ecJHI eOHhdi , s, 1991)
Keywords: (3GdLZQGajG GdJGQjNjIs; (3GdQMGdI GdYQHs; (3GdYdhe YfO GdYQHs; (3GdYQH hGdHMGQs