(3GdWHbGJ GdUZQi (B/ s - (3GdTYQGfi (B, (3GHhGdehGgH YHOGdhs; (3YHOGdbGOQ GMeO YWGs ([S.N] : (3ecJHI GdbGgQI , s, 1970)
Keywords: (3GdYdeGAs; (3GdGSdGes; (3GdJGQjNs; (3YdeGA GdGSdGes