(3GdJZjQGJ GdefGNjI h GdJfejI GdeSJOGeI aj VhA GdbGfhf GdOhdj GdYGe(B/s - (3CejQI YHOGdYXje YOfjs ((3GdbGgQI(B:s (3OGQ GdfgVI GdYQHjI(B,s, 1989)
(3jTJed Ydj HHdjhLQGajGJs
Keywords: (3GdbGfhf GdOhdj GdYGe(B.s; (3JfejI eSJOGeIs