(3GdbQGQ GdEOGQj (B:s (3OQGSI ebGQfI (B/s - (3eMehO eMeO MGaXs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI(B,s, 1993)
. 240-220 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU CZdHg HGddZI GdYQHjI eY HYV GdfUhU GdaQfSjIs
Keywords: (3GdbQGQJ GdEOGQjIs; (3GddhGFM GdJfajPjIs; (3GddhGFM GdJahjVjIs; (3GdJfajP GdeHGTQ ddbQGQ GdEOGQjs