(3GdeONd ddYdhe GdbGfhfjI (B: s (3GdfXQjI GdYGeI ddbGfhf GdfXQjI GdYGeI ddMb (B/ s - (3GdaVdj , LYaQ s; (3GdaVd , efPQ YHO GdMSjf s ((3GdehUd (B: s (3eOjQjI OGQ GdcJH ddWHGYI hGdfTQ , s, 1987)
Keywords: (3GdbGfhf s