(3GdfbO GdeHGM (B:s (3OQGSI ebGQfI (B/s - (3YeGQ YHO GdMejO GdfLGQ(B.s ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI ,s, 1977)
(3jTJed Ydj GQLGYGJ HHdjhLQGajI (B.s
(3HHdjhLQGajI (B: (3UaMGJ (B453- 463.s
Keywords: (3GdbPa GdeHGMs; (3GdbGfhf GdLfGFjs