(3GdJPcQI aj CMhGd GdehJi hCehQ GdBNQI (B/s - (3GdbQWHj, eMeO Hf CMeO Hf CHj HcQ,s (3Jhaj (B671 (3gLQjG(B.s ((3GdbGgQI (B:s (3OGQ GdQjGf ddJQGK,s, 1987)
Keywords: (3jhe GdbjGeIs; (3GdehJs; (3GdhYX hGdEQTGOs; (3YdGeGJ GdSGYIs