(3Yde GdGLJeGY GdJQHhj (B/s - (3GdLhdGfj, aGOjI YeQs ((3GdEScfOQjI, eUQ (B:s (3eQcR GdEScfOQjI ddcJGH,s, 1997)
(3HHdjhLQGajI (B: (3U(B. 357-362.s
Keywords: (3Yde GdGLJeGY GdJQHhjs