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View of the shield used in the construction of the Thames Tunnel
including this example
x2 magnification
A section has been made through the pons Varolii
Bamboo Governor-General View of the shield used
US$ 23.60
US$ 35.30
US$ 56.60
US$ 19.50
US$ 21.00
US$ 12.90
US$ 21.00
US$ 12.30
US$ 13.30
