By Harry MacDonald Steels
By Siegfried Siegesmund, Rolf Snethlage
By Institution Of Civil Engineers
By Michael O'Reilly
By Hellard, R. Baden, Baden Hellard, R.
By M Snell
By John C Chicken, Tamar Posner
By Richard M. C. Driscoll, P. Scott, J. Powell
By John Williams, Williams, John
By Great Britain: Department of the Environment
By Hopkinson, Frank
By David McCullough
By Brian Barr, Leo Grutters
By J. M. Richards
By L T C Rolt, Neil Cossons
By F. Hall
By David Shrier
By Astill, A. W., Martin, L. H.
By L. Rolt
By Sarah Kerr
By Christopher Maynard