(3TQM bGfhf GdELQGAGJ GdLfGFjI (B/s - (3eMehO fLjH MSfj(B.s ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI(B,s, 1979)
. 240-220 (3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3bGfhf GdELQGAGJ GdLfGFjIs