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The Schaefer System (booklet)
'The Schaefer System of Supporting Underground Roads Tunnels Tubes and Shafts'. 24 pages, illustrated throughout. Undated.
Collection Area
Industry
Item Number
2018.51/54
Acquisition
Old stock, 14/2/2018
Measurements
Length
(mm): 243
Width
(mm): 157
Material
paper
card
metal
Location
In store
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