(3LehY GdJUMjM hGdJcSjQ ai GddZI GdYQHjI (B/ s - (3YHOGdefYe SjO YHOGdYGds ([S.N] : (3ecJHI GdNGfLi , s, 1976)
Keywords: (3GdfMhs; (3GddZI GdYQHjIs