(3OQGSGJ aj MVGQI GdGSdGe (B/s - (3LH ,gGedJhfs; (3YHGS ,GMSGf s; (3Th ,SJGfahQOs ((3HjQhJ(B:s (3OGQ GdYde ddedGjjf,s, 1974)
Keywords: (3GdMVGQI GdGSdGejI s