GA26FN --> https://books.google.es/books?id=2VMzEAAAQBAJ&pg=PT14&dq=guerra+anfibia&hl=es&sa=X&ved=2ahUKEwij2uv7tobzAhVoRfEDHbJrDeYQ6AF6BAgCEAI#v=onepage&q=guerra%20anfibia&f=false