(3HdGOj hTYHj s - (3GdOGdGj dGeGs (3GdRYje GdQhMj ddJHJs ((3eUQ (B:s (3eWGHY GdOGQ GdbhejI ddWHGYI hGdfTQ (B:s, 1960)
. 240-220 (3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3ePGgH hTNUjGJs; (3GdHhPjI (B((3GdOGdGj dGeG(B)s; (3HhPjI GdJHJs