(3CSGSjGJ GdYed GdeUQai GdESdGej GdhGbY hGdBaGb (B:s (3OQGSI ebGQfI hehGRfI ddLhGfH(B: (3GdbGfhfjI(B.(3GdeUQajI(B.(3GdabgjI (B/s - (3YHO GdMejO eMehO GdHYdis ((3GdbGgQI (B:s (3ecJHI hgHI,s, 1990)
(3HHdjhLQGajG(B: (3UaMGJ (B142-153.s
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Keywords: (3GdfbhO hGdHfhcs; (3GdeGdjI GdYGeI hGdJTQjY GdVQjHjs