Willard, Keith

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Ballooning

  • Willard, Keith
2001
Surveys the history, equipment, techniques, risks, and safety factors of ballooning.

Bridges

  • Willard, Keith
1999
Examines the history, design, construction, and uses of bridges and describes some notable examples.

Skyscrapers

  • Willard, Keith
1999
Examines the history, design, construction, and uses of skyscrapers and describes some notable examples.
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