(3GHhMfjaI (B: s (3HWd GdMQjg hGdJSGeM ai GdGSdGe (B/ s - (3YHOGdMdje GdLfOis ((3GdbGgQI (B: s (3OGQ GdeYGQa , s, 1992)
Keywords: (3GdGSdGe (B- (3JQGLes; (3GdMfajIs; (3GHhMfjaI GdfYeGfs