(3GdYed eY GdGWaGd (B: s (3fMh JWhjQ GSJNOGe efGgL GdWahdI GdeHcQI (B/ s - (3OQGehfO eGQi Ljfs ((3HjQhJ (B: s (3HjSGf ddfTQ hGdJhRjY , s, 2000)
Keywords: (3JYdje GdGWaGds; (3GdGWaGd (B- (3JOQjHs