By Tibballs, Geoff
By Turney, Jon, Rough Guides
By Warner, Oliver
By F. G. Rayer and others
By Franklin, Gene F., etc., Powell, David, Emami-Naeini, Abbas
By Greer, Alex
By Bentley, John P.
By Huntington, Whitney Clark, Mickadeit, Robert E.
By Ching, Francis D. K.
By Charles J.Vierck
By Fenna, Donald
By Zio, Enrico Et Al
By Anderson, John D.
By Gordon, J E
By Gibbs, David, Hillman
By Holland, Peter
By Unidentified Author
By Jones, J, Burdess, J S, Fawcett, J N
By Scott, C.R.
By karl terzaghi, Ralph Peck
By Blyth, F. G. H.
By N B Webber
By A C Twort
By Mann, H. T., Williamson, D.
By Mosley, W. H., Bungey, J. H.
By A. Bannister, S. Raymond
By Fair, Gordon Maskew, etc.
By Herring, Peter