(3GdeNJUQ GdeajO ai TQM LhgQI GdJhMjO (B/ s - (3fhM Ydi SdeGf GdbVGIs ((3GdGQOf (B: s (3OGQ GdQGRi ddWHGYI hGdfTQ , s, 1999)
Keywords: (3GdJUha GdGSdGeis; (3GdJhMjOs; (3GdSeYjGJs; (3GdGdgjGJs