00954cam a2200205K  4500082001600000100003400016245009200050250001200142260003800154300006600192490005500258500011800313526003700431650001300468650006200481856006000543942001200603999001900615952011400634  a623.68bWAL1 aWalker, Thomas Andrew,95011814aThe Severn tunnelbits construction and difficulties, 1872-1887 /cby Thomas A. Walker.  a2nd ed.  aLondon :bR. Bentley & Son,c1890  a1 online resource (xxi, 188 p.) :bill., ports., maps, plans.1 aThe making of the modern world. Part 2 (1851-1914)  aReproduction from the The Goldsmiths' Library of Economic Literature, Senate House Library, University of London.  a0b0c0d623_680000000000000_WAL 0aMCE9379 0aRailroad tunnelszSevern River (Wales and England)95011940uhttp://www.columbia.edu/cgi-bin/cul/resolve?clio9689726  2ddccBK  c552855d552855  00102ddc4070aMCEbMCEcArchive Sectiond2015-01-23l0o623.68 WALpMCE-ECS/78r2015-01-23w2015-01-23yBK