(3bUI eOjfI GdbOS (B/ s - (3jMji GdaQMGfs ([S.N] : (3GdefXeI GdGSdGejI ddJQHjI hGdYdhe hGdKbGaI , s, 1991)
Keywords: (3adSWjfs; (3GdJGQjN GdGSdGeis; (3GdbOSs