(3GdGfSGf ai GdadSaI GdGSdGejI (B: (3fehPL GdaGQGHi (B/ s - (3GHQGgje YGJis ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1993)
Keywords: (3GdadSaI GdGSdGejIs; (3GdMQcGJ GdacQjI YfO GdeSdejfs; (3GdKbGaI GdGSdGejIs; (3GdadGSaI GdeSdehfs; (3GdaGQGHis