Keith Willard Books
Bridges (Designing the Future) (Designing the Future)
Examines the history, design, construction, and uses of bridges and describes some notable examples.
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Skyscrapers
Examines the history, design, construction, and uses of skyscrapers and describes some notable examples.
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Ballooning
Surveys the history, equipment, techniques, risks, and safety factors of ballooning.
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