00828cam a2200193K 4500 623.68 WAL Walker, Thomas Andrew, 50118 The Severn tunnel its construction and difficulties, 1872-1887 / by Thomas A. Walker. 2nd ed. London : R. Bentley & Son, 1890 1 online resource (xxi, 188 p.) : ill., ports., maps, plans. The making of the modern world. Part 2 (1851-1914) Reproduction from the The Goldsmiths' Library of Economic Literature, Senate House Library, University of London. 0 0 0 623_680000000000000_WAL MCE 379 Railroad tunnels Severn River (Wales and England) 50119 http://www.columbia.edu/cgi-bin/cul/resolve?clio9689726 ddc BK 552855 552855 0 0 ddc 0 0 MCE MCE Archive Section 2015-01-23 0 623.68 WAL MCE-ECS/78 2015-01-23 2015-01-23 BK