(3ai GdSjfeG (B((3gOjI ef GdGOjH YHOGdaJGM GdLed(B) / s - (3eMeO YHOGddg GdTabis ((3GdbGgQI (B: s (3GdOGQ GdbhejI ddWHGYI hGdfTQ , s, 1967)
Keywords: (3GdGadGe GdSjfeGFjIs; (3GdSjfeGs