(3GdTjN YHOGdYRjR GdQTjO (B: (3SjQI MjGJg (B/ s - (3jYbhH jhSa GdMLis ((3GdchjJ (B: s (3eQcR GdHMhK hGdOQGSGJ GdchjJjI , s, 1993)
Keywords: (3GdMVGQI GdYQHjI GdGSdGejI (B- (3GdeYGQa GdHMQjIs; (3GdJGQjN GdGSdGeis; (3YHOGdYRjR GdQTjOs