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River, Railway and Ravine

Parámetros

  • 168 páginas
  • 6 horas de lectura

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From their mid-nineteenth-century fencing business the Harpers of Aberdeen developed a unique system of suspension that allowed their light foot suspension bridges to be relatively rigid. The Harpers' innovative work overcame the disadvantages of this type of bridge and was of considerable benefit to those who relied upon them.

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River, Railway and Ravine, Douglas Harper

Idioma
Publicado en
2015
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