[by] J. A. von Fraunhofer. J. A. von Fraunhofer. by J. A. von Fraunhofer and J. Boxall. J. Boxall and J.A. von Fraunhofer. by J. A. Butler. by J. S. Turner. by J. L. Bell and M. Machover. by J. A. Oates. by J. C. Anderson. by J. D. O'Connor.