(3gOGjI GdMjGQi ai GLhHI GdjghO hGdfUGQi (B/ s - (3GHf bje GdLhRjI(B: (3TeS GdOjf GHh YHOGddg eMeO Hf GHi HcQs; (3GMeO MLGRi GMeO GdSbGs ((3GdbGgQI (B: s (3GdecJHI GdbjeI ddWHGYI hGdfTQ hGdJhRjY , s, 1987)
Keywords: (3GdGSdGes; (3GdjghOjIs; (3GdOjGfGJ GdebGQfIs