(3GddZI GdYQHjI h GdCOH GdYQHj aj JUfja ecJHI GdchfLQS (B/ s - (3GdNGdOj, bGSe eMeO eMehOs; (3YKGefg, YhV GdMGL CMeOs ((3YeGf (B:s (3hRGQI GdKbGaI,s, 1990)
Keywords: (3GdJUfjas; (3GddZI GdYQHjIs; (3JUfja ecJHI GdchfLQSs