(3Gdaf GdYScQi GdGSdGei (B: (3GUhdI heUGOQI (B/ s - (3jGSjf ShjOs ([S.N] : (3TQcI GdeWHhYGJ ddJhRjY hGdfTQ , s, 1990)
Keywords: (3GdaJhMGJ GdGSdGejIs; (3GdJGQjN GdGSdGeis; (3GdYdhe GdYScQjIs; (3GdZRhGJ GdGSdGejIs; (3GdeYGQc GdYQHjI GdGSdGejIs