(3eMHI Gddg aj GdbQBf GdcQje (B/ s - (3GdeMGej, eMeO cGed MSfs ((3HjQhJ (B:s (3efThQGJ GdecJH GdYGdej ddWHGYI hGdfTQ,s, 1988)
Keywords: (3GdEjeGfs; (3GdbQBf GdcQjes; (3Gddgs