(3BdjI GdEfJQHhd aj GdJYGhf GdOhdj GdTQWj (B/s - (3GdQhHj, SQGL GdOjf eMeOs ((3GdbGgQI (B:s (3GdOGQ GdeUQjI GddHfGfjI ddWHGYI hGdfTQ,s, 1998)
(3HHdjhLQGajI (B: (3U(B. 317-320.s
Keywords: (3GdEfJQHhds; (3GdbGfhf GdOhdjs; (3GdLQjeI hGdeLQehfs; (3GdbGfhf GdOhdj GdLfGFjs; (3GdefXeGJ GdOhdjIs