(3RGO GdeYGO ai gOi NjQ GdYHGO (B/ s - (3GHf bje GdLhRjI(B: (3TeS GdOjf GHh YHOGddg eMeO Hf GHi HcQs ((3GdbGgQI (B: s (3GdecJHI GdbjeI ddWHGYI hGdfTQ hGdJhRjY , s, 1989)
Keywords: (3GdTQjYI GdGSdGejIs; (3GddZI GdGSdGejIs