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A paper by Edwin Thatcher before the Engrs. Soc. of West Penn. Treats of the general specification of the Keystone Bridge Company.
A paper by Edwin Thatcher before the Engrs. Soc. of West Penn. Treats of the general specification of the Keystone Bridge Company.
Railway bridge specifications
Am Eng
Thatcher, Edwin (author)
1887
Article (Journal)
English
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