(3GdbVGA GdOhdj GdeSJYLd(B:s (3eMGhdI dUjGZI fXQjI YGeI Mhd GdELQGFGJ GdJMajXjI aj GdbGfhf GdOhdj(B/s - (3YHOGdYRjR eNjeQ YHOGdgGOjs ((3eUQ(B:s (3OGQ GdfgVI GdYQHjI(B,s, 1990)
(3jTJed Ydj GQLGYGJ HHdjhLQGajI(B.s
(3GdfU CZdHg HGddZI GdYQHjI eY HYV GdfUhU GdaQfSjIs
Keywords: (3GdbGfhf GdOhdj GdYGes