(3GdYdhe YfO GdYQH hGdeSdejf ebJfjGJ (B: (3OGQ GdGKGQ GdGSdGejI (B/ s - (3eDSSI GdchjJ ddJbOe GdYdeis ([S.N] : (3eDSSI GdchjJ ddJbOe GdYdei , s, 1989)
Keywords: (3GdMVGQI GdYQHjI GdGSdGejI (B- (3GdeYGQa GdHMQjIs; (3GdYdhe YfO GdYQHs; (3GdYdeGA GdYQHs; (3GdbdHs