(3GdCPf COGI GdSeY (B: s (3MhGSfG SHjdfG Edi eYQaI GdYGde (B/ s - (3HbGYj, EjeGfs ((3HjQhJ (B:s (3OGQ GdfehPLjI ddfTQ,s, 1999)
Keywords: (3LSe GdEfSGfs; (3GdCWaGds; (3GdbUUs; (3Yde GdhXGFas; (3GdCPfs