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Bridges--Design and construction--Costs (1)
Bridges--Design and construction--Estimates (1)
Bridges--Economic aspects (1)
Bridges--Foundations and piers--Design and construction (1)
Bridges--Live loads--Guayanilla, Puerto Rico (1)
Bridges--Live loads--Safety regulations (1)
Bridges--Maintenance and repair (1)
Bridges--Puerto Rico--Abutments--Design and construction (1)
Bridges--War damage-Economic aspects (1)
Building inspection--Puerto Rico (1)