(3JghjO adSWjf (B/s - (3GHh dZO , GHQGgje s (((3O(B.(3e(B)s (3efXeI GdJMQjQ GdadSWjfjI ,s, 1972)
(3eUGOQ HGddZI GdGfLdjRjI fgGjI GdcJGH s
Keywords: (3adSWjf s