Additional information on the author W.S. Peterson.

Additional information on the author W.O. Hassall.

Additional information on the author W.L. Williamson.

Additional information on the author W.H. Sherman.

Additional information on the author W.H. Bond.

Additional information on the author W.A. Jackson.

Additional information on the author W. Schatzki.

Additional information on the author W. Rees-Mogg.

Additional information on the author W. Carnochan.

Additional information on the author Vladimir Lublinsky.