(3GdGceGd(B: (3ai QaY GdGQJjGH Yf GdeDJda hGdeNJda ai GdGSeGA hGdcfi GdGfSGH (B/ s - (3eGchdG(B, (3Ydi Hf gHIGddgs ([S.N] : (3OGQ GdcJH GdYdejI ddfTQ hGdJhRjY , s, 1990)