(3OSJhQ CeI GdESdGe (B: s (3OQGSI aj CUhd GdMce h WHjYJg h ZGjJg YfO GdeSdejf (B/ s - (3eDfS, MSjfs ((3GdbGgQI (B:s (3OGQ GdQTGO,s, 1993)
Keywords: (3GdCMcGe GdSdWGfjIs; (3fXGe GdMce aj GdESdGes