(3cfJ QFjSG ddSi (B. (3Gi (B. (3GjI (B/ s - (3OGdGS, Gdfs; (3YdGA GdGYUQs ([S.N] : (3OGQ GdTQhb , s, 1990)
Keywords: (3GdGJMGO GdShajJis; (3GdhdGjGJ GdeJMOI GdGeQjcjIs; (3GdeNGHQGJs; (3GdLGShSjIs