(3GdeTQYGJ GdHMKjI GdeOYheI (B: s (3JMOjO eSJhi GdQUGU aj GdOe dOi GdehGWf GdYQHj (B/ s - (3hRGQI GdUMI (B. (3GdCQOfs ((3YeGf (B:s (3GdeLdS GdGYdi ddYdhe,s, 1997)
Keywords: (3GdUMIs; (3GdCeQGVs; (3UMI GdHjFIs; (3GdOes