(3GdGJLGg GdfbOi YfO GHf WHGWHG (B/ s - (3YHOGddg YHOGdQMje GdYHGOis ([S.N] : (3ecJHg GdfgVg GdeUQjg , s, 1990)
Keywords: (3GdTYQ GdYQHis; (3GdGOH GdYQHis; (3GHf WHGWHGs; (3JGQjN hfbOs; (3GdeLehYGJs