(3ai GdTYQ GdYeGfi GdeYGUQ (B/ s - (3YHOGddWja YHOGdMdjes ([S.N] : (3ecJHI GdfgVI GdeUQjI , s, 1989)
Keywords: (3SdWfI YeGfs; (3GdTYQ GdYQHi GdMOjKs; (3JGQjN hfbOs