(3GdNOGY h GdJfUjQ (B- (3TghO jghg hNOYI GdJfUjQ GdLOjO (B/ s - (3YHO Gddg, eMeO YHO GdQMef s ((3GdbGgQI (B: s (3OGQ GdOYhI ddWHY h GdfTQ h GdJhRjY, s, 1997)
Keywords: (3GdeSjMjI(B. s; (3GdJfUjQ(B. s; (3GdESdGe(B. s