(3GdehSjbG GdGfOdSjI GdeZQHjI (B: s (3afhf GdGOGA (B/ s - (3YHOGdLdjd , YHO GdYRjR s ((3GdchjJ (B: s (3GdeLdS GdhWfj ddKbGaI hGdafhf GdGOGH , s, 1988)
Keywords: (3GdehSjbi s