(3GSS ejJGajRjbG GdGNdGb (B/ s - (3cGfW (B, (3GeGfhjds; (3eMeO aJMi GdTfjWis ((3HjQhJ (B:s (3OGQ GdfgVI GdYQHjI ,s, 1970)
Keywords: (3GdGNdGb (B- (3Ydes; (3eG hQGA GdWHjYI(B, (3Ydes