(3GdhSjW ai TQM JTQjYGJ GdHfGA (B/ s - (3eYhV YHOGdJhGHs ([S.N] : (3ecJHg GdfgVg GdeUQjg , s, 1988)
Keywords: (3eUQs; (3GdbGfhf GdeOfis; (3GdbGfhf GdNGUs; (3GdeHGfis; (3GdHfGAs