(3GdHMQjf (B: s (3eTcdGJ GdJZjjQ GdSjGSj h GdELJeGYj (B/ s - (3GdQejMj, eMeOs ((3GdchjJ (B:s (3TQcI cGXeg ddfTQ h GdJhRjY,s, 1984)
Keywords: (3GdHMQjfs; (3GdJGQjNs