(3dZI GdQjGVjGJ ai GdYQHjI (B/ s - (3eMeO ShjSis ((3JhfS (B:s (3GdeDSSI GdhWfjI ddJQLeI hGdJMbjb hGdOQGSGJ , s, 1989)
Keywords: (3GdQjGVjGJs; (3GdeYGLes; (3GdeUWdMGJs