(3JGQjN GjQGf HYO GdGSdGe (B: s (3ef HOGjI GdOhdI GdWGgQjI MJi fgGjI GdOhdI GdbdLGQjI (B/ s - (3eMeO YdGAGdOjf efUhQs; (3GdSHGYi eMeO GdSHGYis ((3GdbGgQI (B: s (3OGQ GdKbGaI ddfTQ hGdJhRjY , s, 1989)
Keywords: (3GjQGfs; (3GdJGQjN GdGSdGeis; (3GdOhdI GdWGgQjIs; (3GdeZhds