(3GehShYI GdYde hGdJcfhdhLjG GdejSQI (B- ( 6 ) : (3GdWGFQI hCSGSjGJ GdWjQGf s - (3SYO GdOjf(B. (3YUGes ((3OGQ GdcJGH GdeUQjs (3GdbGgQIs, 1991)
Keywords: (3GdYdhe GdJWHjbjIs; (3ehShYGJs; (3GdWGFQI s; (3GdWjQGf (B- (3CSGSjGJ s