File:Cross section of tunnel (Walker 1888).png

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Description Cross section of tunnel, shewing mode of construction
Date
Source Original: Thomas A. Walker (1888). The Severn Tunnel. Facing page 34.
Scan: Internet Archive: https://archive.org/details/severntunnelits01walkgoog
Author Thomas A. Walker
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Date/TimeThumbnailDimensionsUserComment
current12:38, 20 November 2011Thumbnail for version as of 12:38, 20 November 20112,722 × 3,598 (1.46 MB)Iain Bell{{Information |Description=Cross section of tunnel, shewing mode of construction |Source=''Original:'' Thomas A. Walker (1888). The Severn Tunnel. Facing page 28.<br>''Scan:'' Internet Archive: http://www.archive.org/details/severntunnelits01walkgoog |Dat

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